diff --git a/src/NexusMods.MneumonicDB.Abstractions/IDb.cs b/src/NexusMods.MneumonicDB.Abstractions/IDb.cs
index 95aad8cb..e66171be 100644
--- a/src/NexusMods.MneumonicDB.Abstractions/IDb.cs
+++ b/src/NexusMods.MneumonicDB.Abstractions/IDb.cs
@@ -64,4 +64,11 @@ public IEnumerable<IReadDatom> Datoms<TAttribute>()
     /// Create a new iterator for the given index type.
     /// </summary>
     IDatomSource Iterate(IndexType index);
+
+    /// <summary>
+    /// Gets all values for the given attribute on the given entity. There's no reason to use this
+    /// on attributes that are not multi-valued.
+    /// </summary>
+    IEnumerable<TValueType> GetAll<TAttribute, TValueType>(ref ModelHeader model, EntityId modelId)
+        where TAttribute : IAttribute<TValueType>;
 }
diff --git a/src/NexusMods.MneumonicDB.Abstractions/ScalarAttribute.cs b/src/NexusMods.MneumonicDB.Abstractions/ScalarAttribute.cs
index 04046265..9be6dd17 100644
--- a/src/NexusMods.MneumonicDB.Abstractions/ScalarAttribute.cs
+++ b/src/NexusMods.MneumonicDB.Abstractions/ScalarAttribute.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Buffers;
+using System.Collections.Generic;
 using NexusMods.MneumonicDB.Abstractions.Internals;
 using NexusMods.MneumonicDB.Abstractions.Models;
 
@@ -21,11 +22,11 @@ public class ScalarAttribute<TAttribute, TValueType> : IAttribute<TValueType>
     protected ScalarAttribute(string uniqueName = "",
         bool isIndexed = false,
         bool keepHistory = true,
-        bool multiArity = false)
+        bool multiValued = false)
     {
         IsIndexed = isIndexed;
         KeepHistory = keepHistory;
-        MultiArity = multiArity;
+        Multivalued = multiValued;
         Id = uniqueName == "" ? Symbol.Intern(typeof(TAttribute).FullName!) : Symbol.InternPreSanitized(uniqueName);
     }
 
@@ -37,7 +38,7 @@ protected ScalarAttribute(Symbol symbol)
         Id = symbol;
     }
 
-    public bool MultiArity { get; }
+    public bool Multivalued { get; }
 
     public bool KeepHistory { get; }
 
@@ -128,6 +129,11 @@ public static TValueType Get(ref ModelHeader model)
         return model.Db.Get<TAttribute, TValueType>(ref model, model.Id);
     }
 
+    public static IEnumerable<TValueType> GetAll(ref ModelHeader model)
+    {
+        return model.Db.GetAll<TAttribute, TValueType>(ref model, model.Id);
+    }
+
     /// <inheritdoc />
     public static void Add(ref ModelHeader model, TValueType value)
     {
diff --git a/src/NexusMods.MneumonicDB.Storage/DatomStore.cs b/src/NexusMods.MneumonicDB.Storage/DatomStore.cs
index 2e0e6a23..e1f5e36c 100644
--- a/src/NexusMods.MneumonicDB.Storage/DatomStore.cs
+++ b/src/NexusMods.MneumonicDB.Storage/DatomStore.cs
@@ -330,10 +330,7 @@ private unsafe void Log(PendingTransaction pendingTransaction, out StoreResult r
         foreach (var datom in pendingTransaction.Data)
         {
             _writer.Reset();
-            unsafe
-            {
-                _writer.Advance(sizeof(KeyPrefix));
-            }
+            _writer.Advance(sizeof(KeyPrefix));
 
             var isRemapped = Ids.IsPartition(datom.E.Value, Ids.Partition.Tmp);
             datom.Explode(_registry, remapFn, out var e, out var a, _writer, out var isRetract);
diff --git a/src/NexusMods.MneumonicDB/Db.cs b/src/NexusMods.MneumonicDB/Db.cs
index 5dda8d33..6ccbd3c0 100644
--- a/src/NexusMods.MneumonicDB/Db.cs
+++ b/src/NexusMods.MneumonicDB/Db.cs
@@ -16,7 +16,7 @@ internal class Db : IDb
     private readonly Connection _connection;
     private readonly AttributeRegistry _registry;
     private readonly EntityCache _cache;
-    private readonly ConcurrentDictionary<EntityId, EntityId[]> _reverseCache = new();
+    private readonly ConcurrentDictionary<(EntityId, Type), EntityId[]> _reverseCache = new();
     internal readonly ISnapshot Snapshot;
 
     public Db(ISnapshot snapshot, Connection connection, TxId txId, AttributeRegistry registry)
@@ -39,7 +39,6 @@ public IEnumerable<TModel> Get<TModel>(IEnumerable<EntityId> ids)
         {
             yield return Get<TModel>(id);
         }
-
     }
 
     public TValue Get<TAttribute, TValue>(ref ModelHeader header, EntityId id)
@@ -65,7 +64,7 @@ public TModel[] GetReverse<TAttribute, TModel>(EntityId id)
         where TAttribute : IAttribute<EntityId>
         where TModel : struct, IEntity
     {
-        if (!_reverseCache.TryGetValue(id, out var eIds))
+        if (!_reverseCache.TryGetValue((id, typeof(TAttribute)), out var eIds))
         {
             using var attrSource = Snapshot.GetIterator(IndexType.VAETCurrent);
             var attrId = _registry.GetAttributeId<TAttribute>();
@@ -76,7 +75,7 @@ public TModel[] GetReverse<TAttribute, TModel>(EntityId id)
                 .Select(c => c.CurrentKeyPrefix().E)
                 .ToArray();
 
-            _reverseCache[id] = eIds;
+            _reverseCache[(id, typeof(TAttribute))] = eIds;
         }
 
         var results = GC.AllocateUninitializedArray<TModel>(eIds.Length);
@@ -121,5 +120,11 @@ public IDatomSource Iterate(IndexType index)
         return Snapshot.GetIterator(index);
     }
 
+    public IEnumerable<TValueType> GetAll<TAttribute, TValueType>(ref ModelHeader model, EntityId modelId)
+        where TAttribute : IAttribute<TValueType>
+    {
+        return _cache.GetAll<TAttribute, TValueType>(ref model);
+    }
+
     public void Dispose() { }
 }
diff --git a/src/NexusMods.MneumonicDB/EntityCache.cs b/src/NexusMods.MneumonicDB/EntityCache.cs
index f373b220..223f4dc1 100644
--- a/src/NexusMods.MneumonicDB/EntityCache.cs
+++ b/src/NexusMods.MneumonicDB/EntityCache.cs
@@ -114,4 +114,44 @@ private class Entry
         public ushort[] Offsets = null!;
         public byte[] Data = null!;
     }
+
+    public IEnumerable<TValue> GetAll<TAttribute, TValue>(ref ModelHeader header)
+        where TAttribute : IAttribute<TValue>
+    {
+        Entry entry;
+        if (header.InlineCache is Entry inline)
+            entry = inline;
+        else if (!cache.TryGetValue(header.Id, out entry!))
+            entry = Cache(header.Id);
+
+        header.InlineCache = entry;
+
+        return GetAllInner<TAttribute, TValue>(entry);
+    }
+
+    private IEnumerable<TValue> GetAllInner<TAttribute, TValue>(Entry entry) where TAttribute : IAttribute<TValue>
+    {
+        var localCache = InlineCache<TAttribute, TValue>.Instance;
+        if (localCache.Registry != registry)
+        {
+            localCache = Recache<TAttribute, TValue>();
+        }
+
+        var attributeIndex = Array.IndexOf(entry.Attributes, localCache.Id);
+        if (attributeIndex == -1)
+            yield break;
+
+        while (attributeIndex < entry.Attributes.Length)
+        {
+            if (entry.Attributes[attributeIndex] != localCache.Id)
+                break;
+
+            var offset = entry.Offsets[attributeIndex];
+            var length = entry.Offsets[attributeIndex + 1] - offset;
+
+            localCache.Serializer.Read(entry.Data.AsSpan().SliceFast(offset, length), out var value);
+            yield return value;
+            attributeIndex++;
+        }
+    }
 }
diff --git a/tests/NexusMods.MneumonicDB.Storage.Tests/ABackendTest.cs b/tests/NexusMods.MneumonicDB.Storage.Tests/ABackendTest.cs
index f0214bda..0d1a1131 100644
--- a/tests/NexusMods.MneumonicDB.Storage.Tests/ABackendTest.cs
+++ b/tests/NexusMods.MneumonicDB.Storage.Tests/ABackendTest.cs
@@ -33,6 +33,8 @@ public async Task InsertedDatomsShowUpInTheIndex(IndexType type)
 
         var modId1 = NextTempId();
         var modId2 = NextTempId();
+        var loadoutId = NextTempId();
+        var collectionId = NextTempId();
 
         var tx = await DatomStore.Transact([
             FileAttributes.Path.Assert(id1, "/foo/bar"),
@@ -44,16 +46,26 @@ public async Task InsertedDatomsShowUpInTheIndex(IndexType type)
             FileAttributes.ModId.Assert(id1, modId1),
             FileAttributes.ModId.Assert(id2, modId1),
             ModAttributes.Name.Assert(modId1, "Test Mod 1"),
-            ModAttributes.Name.Assert(modId2, "Test Mod 2")
+            ModAttributes.LoadoutId.Assert(modId1, loadoutId),
+            ModAttributes.Name.Assert(modId2, "Test Mod 2"),
+            ModAttributes.LoadoutId.Assert(modId2, loadoutId),
+            LoadoutAttributes.Name.Assert(loadoutId, "Test Loadout 1"),
+            CollectionAttributes.Name.Assert(collectionId, "Test Collection 1"),
+            CollectionAttributes.LoadoutId.Assert(collectionId, loadoutId),
+            CollectionAttributes.Mods.Assert(collectionId, modId1),
+            CollectionAttributes.Mods.Assert(collectionId, modId2)
         ]);
 
         id1 = tx.Remaps[id1];
         id2 = tx.Remaps[id2];
+        collectionId = tx.Remaps[collectionId];
 
         tx = await DatomStore.Transact([
             // Rename file 1 and move file 1 to mod 2
             FileAttributes.Path.Assert(id2, "/foo/qux"),
-            FileAttributes.ModId.Assert(id1, modId2)
+            FileAttributes.ModId.Assert(id1, modId2),
+            // Remove mod2 from collection
+            CollectionAttributes.Mods.Retract(collectionId, modId2),
         ]);
 
         using var iterator = tx.Snapshot.GetIterator(type);
diff --git a/tests/NexusMods.MneumonicDB.Storage.Tests/AStorageTest.cs b/tests/NexusMods.MneumonicDB.Storage.Tests/AStorageTest.cs
index b90d8c0b..0e33d906 100644
--- a/tests/NexusMods.MneumonicDB.Storage.Tests/AStorageTest.cs
+++ b/tests/NexusMods.MneumonicDB.Storage.Tests/AStorageTest.cs
@@ -39,7 +39,17 @@ protected AStorageTest(IServiceProvider provider, Func<AttributeRegistry, IStore
             new DbAttribute(Symbol.Intern<FileAttributes.ModId>(), AttributeId.From(23),
                 Symbol.Intern<EntityIdSerializer>()),
             new DbAttribute(Symbol.Intern<ModAttributes.Name>(), AttributeId.From(24),
-                Symbol.Intern<StringSerializer>())
+                Symbol.Intern<StringSerializer>()),
+            new DbAttribute(Symbol.Intern<ModAttributes.LoadoutId>(), AttributeId.From(25),
+                Symbol.Intern<EntityIdSerializer>()),
+            new DbAttribute(Symbol.Intern<LoadoutAttributes.Name>(), AttributeId.From(26),
+                Symbol.Intern<StringSerializer>()),
+            new DbAttribute(Symbol.Intern<CollectionAttributes.Name>(), AttributeId.From(27),
+                Symbol.Intern<StringSerializer>()),
+            new DbAttribute(Symbol.Intern<CollectionAttributes.LoadoutId>(), AttributeId.From(28),
+                Symbol.Intern<EntityIdSerializer>()),
+            new DbAttribute(Symbol.Intern<CollectionAttributes.Mods>(), AttributeId.From(29),
+                Symbol.Intern<EntityIdSerializer>())
         ]);
         _path = FileSystem.Shared.GetKnownPath(KnownPath.EntryDirectory).Combine("tests_datomstore" + Guid.NewGuid());
 
diff --git a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=AEVTCurrent.verified.txt b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=AEVTCurrent.verified.txt
index 37dd02de..98bfcda6 100644
--- a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=AEVTCurrent.verified.txt
+++ b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=AEVTCurrent.verified.txt
@@ -8,7 +8,13 @@
 + | 0200000000000002 | (0015) Hash                     | 0x00000000DEADBEAF                               | 0100000000000002
 + | 0200000000000001 | (0016) Size                     | 42 B                                             | 0100000000000002
 + | 0200000000000002 | (0016) Size                     | 77 B                                             | 0100000000000002
-+ | 0200000000000001 | (0017) ModId                    | 0200000000000005                                 | 0100000000000003
++ | 0200000000000001 | (0017) ModId                    | 0200000000000007                                 | 0100000000000003
 + | 0200000000000002 | (0017) ModId                    | 0200000000000003                                 | 0100000000000002
 + | 0200000000000003 | (0018) Name                     | Test Mod 1                                       | 0100000000000002
-+ | 0200000000000004 | (0018) Name                     | Test Mod 2                                       | 0100000000000002
++ | 0200000000000005 | (0018) Name                     | Test Mod 2                                       | 0100000000000002
++ | 0200000000000003 | (0019) LoadoutId                | 0200000000000004                                 | 0100000000000002
++ | 0200000000000005 | (0019) LoadoutId                | 0200000000000004                                 | 0100000000000002
++ | 0200000000000004 | (001A) Name                     | Test Loadout 1                                   | 0100000000000002
++ | 0200000000000006 | (001B) Name                     | Test Collection 1                                | 0100000000000002
++ | 0200000000000006 | (001C) LoadoutId                | 0200000000000004                                 | 0100000000000002
++ | 0200000000000006 | (001D) Mods                     | 0200000000000005                                 | 0100000000000002
diff --git a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=AEVTHistory.verified.txt b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=AEVTHistory.verified.txt
index b26c4860..aa5db5bc 100644
--- a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=AEVTHistory.verified.txt
+++ b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=AEVTHistory.verified.txt
@@ -1,2 +1,4 @@
 + | 0200000000000002 | (0014) Path                     | /qix/bar                                         | 0100000000000002
 + | 0200000000000001 | (0017) ModId                    | 0200000000000003                                 | 0100000000000002
++ | 0200000000000006 | (001D) Mods                     | 0200000000000003                                 | 0100000000000002
+- | 0200000000000006 | (001D) Mods                     | 0200000000000007                                 | 0100000000000003
diff --git a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=EAVTCurrent.verified.txt b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=EAVTCurrent.verified.txt
index 7697dd73..d02a29a6 100644
--- a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=EAVTCurrent.verified.txt
+++ b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=EAVTCurrent.verified.txt
@@ -5,10 +5,16 @@
 + | 0200000000000001 | (0014) Path                     | /foo/bar                                         | 0100000000000002
 + | 0200000000000001 | (0015) Hash                     | 0x00000000DEADBEEF                               | 0100000000000002
 + | 0200000000000001 | (0016) Size                     | 42 B                                             | 0100000000000002
-+ | 0200000000000001 | (0017) ModId                    | 0200000000000005                                 | 0100000000000003
++ | 0200000000000001 | (0017) ModId                    | 0200000000000007                                 | 0100000000000003
 + | 0200000000000002 | (0014) Path                     | /foo/qux                                         | 0100000000000003
 + | 0200000000000002 | (0015) Hash                     | 0x00000000DEADBEAF                               | 0100000000000002
 + | 0200000000000002 | (0016) Size                     | 77 B                                             | 0100000000000002
 + | 0200000000000002 | (0017) ModId                    | 0200000000000003                                 | 0100000000000002
 + | 0200000000000003 | (0018) Name                     | Test Mod 1                                       | 0100000000000002
-+ | 0200000000000004 | (0018) Name                     | Test Mod 2                                       | 0100000000000002
++ | 0200000000000003 | (0019) LoadoutId                | 0200000000000004                                 | 0100000000000002
++ | 0200000000000004 | (001A) Name                     | Test Loadout 1                                   | 0100000000000002
++ | 0200000000000005 | (0018) Name                     | Test Mod 2                                       | 0100000000000002
++ | 0200000000000005 | (0019) LoadoutId                | 0200000000000004                                 | 0100000000000002
++ | 0200000000000006 | (001B) Name                     | Test Collection 1                                | 0100000000000002
++ | 0200000000000006 | (001C) LoadoutId                | 0200000000000004                                 | 0100000000000002
++ | 0200000000000006 | (001D) Mods                     | 0200000000000005                                 | 0100000000000002
diff --git a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=EAVTHistory.verified.txt b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=EAVTHistory.verified.txt
index 1d8ab626..6f03d654 100644
--- a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=EAVTHistory.verified.txt
+++ b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=EAVTHistory.verified.txt
@@ -1,2 +1,4 @@
 + | 0200000000000001 | (0017) ModId                    | 0200000000000003                                 | 0100000000000002
 + | 0200000000000002 | (0014) Path                     | /qix/bar                                         | 0100000000000002
++ | 0200000000000006 | (001D) Mods                     | 0200000000000003                                 | 0100000000000002
+- | 0200000000000006 | (001D) Mods                     | 0200000000000007                                 | 0100000000000003
diff --git a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=TxLog.verified.txt b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=TxLog.verified.txt
index cd4a6676..da6957b2 100644
--- a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=TxLog.verified.txt
+++ b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=TxLog.verified.txt
@@ -11,6 +11,14 @@
 + | 0200000000000002 | (0016) Size                     | 77 B                                             | 0100000000000002
 + | 0200000000000002 | (0017) ModId                    | 0200000000000003                                 | 0100000000000002
 + | 0200000000000003 | (0018) Name                     | Test Mod 1                                       | 0100000000000002
-+ | 0200000000000004 | (0018) Name                     | Test Mod 2                                       | 0100000000000002
-+ | 0200000000000001 | (0017) ModId                    | 0200000000000005                                 | 0100000000000003
++ | 0200000000000003 | (0019) LoadoutId                | 0200000000000004                                 | 0100000000000002
++ | 0200000000000004 | (001A) Name                     | Test Loadout 1                                   | 0100000000000002
++ | 0200000000000005 | (0018) Name                     | Test Mod 2                                       | 0100000000000002
++ | 0200000000000005 | (0019) LoadoutId                | 0200000000000004                                 | 0100000000000002
++ | 0200000000000006 | (001B) Name                     | Test Collection 1                                | 0100000000000002
++ | 0200000000000006 | (001C) LoadoutId                | 0200000000000004                                 | 0100000000000002
++ | 0200000000000006 | (001D) Mods                     | 0200000000000003                                 | 0100000000000002
++ | 0200000000000006 | (001D) Mods                     | 0200000000000005                                 | 0100000000000002
++ | 0200000000000001 | (0017) ModId                    | 0200000000000007                                 | 0100000000000003
 + | 0200000000000002 | (0014) Path                     | /foo/qux                                         | 0100000000000003
+- | 0200000000000006 | (001D) Mods                     | 0200000000000007                                 | 0100000000000003
diff --git a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=VAETCurrent.verified.txt b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=VAETCurrent.verified.txt
index e4e846a6..fe2ba2cc 100644
--- a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=VAETCurrent.verified.txt
+++ b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=VAETCurrent.verified.txt
@@ -1,2 +1,6 @@
 + | 0200000000000002 | (0017) ModId                    | 0200000000000003                                 | 0100000000000002
-+ | 0200000000000001 | (0017) ModId                    | 0200000000000005                                 | 0100000000000003
++ | 0200000000000003 | (0019) LoadoutId                | 0200000000000004                                 | 0100000000000002
++ | 0200000000000005 | (0019) LoadoutId                | 0200000000000004                                 | 0100000000000002
++ | 0200000000000006 | (001C) LoadoutId                | 0200000000000004                                 | 0100000000000002
++ | 0200000000000006 | (001D) Mods                     | 0200000000000005                                 | 0100000000000002
++ | 0200000000000001 | (0017) ModId                    | 0200000000000007                                 | 0100000000000003
diff --git a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=VAETHistory.verified.txt b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=VAETHistory.verified.txt
index 251d8d2b..9a0c448c 100644
--- a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=VAETHistory.verified.txt
+++ b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/InMemoryTests.InsertedDatomsShowUpInTheIndex_type=VAETHistory.verified.txt
@@ -1 +1,3 @@
 + | 0200000000000001 | (0017) ModId                    | 0200000000000003                                 | 0100000000000002
++ | 0200000000000006 | (001D) Mods                     | 0200000000000003                                 | 0100000000000002
+- | 0200000000000006 | (001D) Mods                     | 0200000000000007                                 | 0100000000000003
diff --git a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=AEVTCurrent.verified.txt b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=AEVTCurrent.verified.txt
index 37dd02de..98bfcda6 100644
--- a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=AEVTCurrent.verified.txt
+++ b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=AEVTCurrent.verified.txt
@@ -8,7 +8,13 @@
 + | 0200000000000002 | (0015) Hash                     | 0x00000000DEADBEAF                               | 0100000000000002
 + | 0200000000000001 | (0016) Size                     | 42 B                                             | 0100000000000002
 + | 0200000000000002 | (0016) Size                     | 77 B                                             | 0100000000000002
-+ | 0200000000000001 | (0017) ModId                    | 0200000000000005                                 | 0100000000000003
++ | 0200000000000001 | (0017) ModId                    | 0200000000000007                                 | 0100000000000003
 + | 0200000000000002 | (0017) ModId                    | 0200000000000003                                 | 0100000000000002
 + | 0200000000000003 | (0018) Name                     | Test Mod 1                                       | 0100000000000002
-+ | 0200000000000004 | (0018) Name                     | Test Mod 2                                       | 0100000000000002
++ | 0200000000000005 | (0018) Name                     | Test Mod 2                                       | 0100000000000002
++ | 0200000000000003 | (0019) LoadoutId                | 0200000000000004                                 | 0100000000000002
++ | 0200000000000005 | (0019) LoadoutId                | 0200000000000004                                 | 0100000000000002
++ | 0200000000000004 | (001A) Name                     | Test Loadout 1                                   | 0100000000000002
++ | 0200000000000006 | (001B) Name                     | Test Collection 1                                | 0100000000000002
++ | 0200000000000006 | (001C) LoadoutId                | 0200000000000004                                 | 0100000000000002
++ | 0200000000000006 | (001D) Mods                     | 0200000000000005                                 | 0100000000000002
diff --git a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=AEVTHistory.verified.txt b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=AEVTHistory.verified.txt
index b26c4860..aa5db5bc 100644
--- a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=AEVTHistory.verified.txt
+++ b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=AEVTHistory.verified.txt
@@ -1,2 +1,4 @@
 + | 0200000000000002 | (0014) Path                     | /qix/bar                                         | 0100000000000002
 + | 0200000000000001 | (0017) ModId                    | 0200000000000003                                 | 0100000000000002
++ | 0200000000000006 | (001D) Mods                     | 0200000000000003                                 | 0100000000000002
+- | 0200000000000006 | (001D) Mods                     | 0200000000000007                                 | 0100000000000003
diff --git a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=EAVTCurrent.verified.txt b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=EAVTCurrent.verified.txt
index 7697dd73..d02a29a6 100644
--- a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=EAVTCurrent.verified.txt
+++ b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=EAVTCurrent.verified.txt
@@ -5,10 +5,16 @@
 + | 0200000000000001 | (0014) Path                     | /foo/bar                                         | 0100000000000002
 + | 0200000000000001 | (0015) Hash                     | 0x00000000DEADBEEF                               | 0100000000000002
 + | 0200000000000001 | (0016) Size                     | 42 B                                             | 0100000000000002
-+ | 0200000000000001 | (0017) ModId                    | 0200000000000005                                 | 0100000000000003
++ | 0200000000000001 | (0017) ModId                    | 0200000000000007                                 | 0100000000000003
 + | 0200000000000002 | (0014) Path                     | /foo/qux                                         | 0100000000000003
 + | 0200000000000002 | (0015) Hash                     | 0x00000000DEADBEAF                               | 0100000000000002
 + | 0200000000000002 | (0016) Size                     | 77 B                                             | 0100000000000002
 + | 0200000000000002 | (0017) ModId                    | 0200000000000003                                 | 0100000000000002
 + | 0200000000000003 | (0018) Name                     | Test Mod 1                                       | 0100000000000002
-+ | 0200000000000004 | (0018) Name                     | Test Mod 2                                       | 0100000000000002
++ | 0200000000000003 | (0019) LoadoutId                | 0200000000000004                                 | 0100000000000002
++ | 0200000000000004 | (001A) Name                     | Test Loadout 1                                   | 0100000000000002
++ | 0200000000000005 | (0018) Name                     | Test Mod 2                                       | 0100000000000002
++ | 0200000000000005 | (0019) LoadoutId                | 0200000000000004                                 | 0100000000000002
++ | 0200000000000006 | (001B) Name                     | Test Collection 1                                | 0100000000000002
++ | 0200000000000006 | (001C) LoadoutId                | 0200000000000004                                 | 0100000000000002
++ | 0200000000000006 | (001D) Mods                     | 0200000000000005                                 | 0100000000000002
diff --git a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=EAVTHistory.verified.txt b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=EAVTHistory.verified.txt
index 1d8ab626..6f03d654 100644
--- a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=EAVTHistory.verified.txt
+++ b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=EAVTHistory.verified.txt
@@ -1,2 +1,4 @@
 + | 0200000000000001 | (0017) ModId                    | 0200000000000003                                 | 0100000000000002
 + | 0200000000000002 | (0014) Path                     | /qix/bar                                         | 0100000000000002
++ | 0200000000000006 | (001D) Mods                     | 0200000000000003                                 | 0100000000000002
+- | 0200000000000006 | (001D) Mods                     | 0200000000000007                                 | 0100000000000003
diff --git a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=TxLog.verified.txt b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=TxLog.verified.txt
index cd4a6676..da6957b2 100644
--- a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=TxLog.verified.txt
+++ b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=TxLog.verified.txt
@@ -11,6 +11,14 @@
 + | 0200000000000002 | (0016) Size                     | 77 B                                             | 0100000000000002
 + | 0200000000000002 | (0017) ModId                    | 0200000000000003                                 | 0100000000000002
 + | 0200000000000003 | (0018) Name                     | Test Mod 1                                       | 0100000000000002
-+ | 0200000000000004 | (0018) Name                     | Test Mod 2                                       | 0100000000000002
-+ | 0200000000000001 | (0017) ModId                    | 0200000000000005                                 | 0100000000000003
++ | 0200000000000003 | (0019) LoadoutId                | 0200000000000004                                 | 0100000000000002
++ | 0200000000000004 | (001A) Name                     | Test Loadout 1                                   | 0100000000000002
++ | 0200000000000005 | (0018) Name                     | Test Mod 2                                       | 0100000000000002
++ | 0200000000000005 | (0019) LoadoutId                | 0200000000000004                                 | 0100000000000002
++ | 0200000000000006 | (001B) Name                     | Test Collection 1                                | 0100000000000002
++ | 0200000000000006 | (001C) LoadoutId                | 0200000000000004                                 | 0100000000000002
++ | 0200000000000006 | (001D) Mods                     | 0200000000000003                                 | 0100000000000002
++ | 0200000000000006 | (001D) Mods                     | 0200000000000005                                 | 0100000000000002
++ | 0200000000000001 | (0017) ModId                    | 0200000000000007                                 | 0100000000000003
 + | 0200000000000002 | (0014) Path                     | /foo/qux                                         | 0100000000000003
+- | 0200000000000006 | (001D) Mods                     | 0200000000000007                                 | 0100000000000003
diff --git a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=VAETCurrent.verified.txt b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=VAETCurrent.verified.txt
index e4e846a6..fe2ba2cc 100644
--- a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=VAETCurrent.verified.txt
+++ b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=VAETCurrent.verified.txt
@@ -1,2 +1,6 @@
 + | 0200000000000002 | (0017) ModId                    | 0200000000000003                                 | 0100000000000002
-+ | 0200000000000001 | (0017) ModId                    | 0200000000000005                                 | 0100000000000003
++ | 0200000000000003 | (0019) LoadoutId                | 0200000000000004                                 | 0100000000000002
++ | 0200000000000005 | (0019) LoadoutId                | 0200000000000004                                 | 0100000000000002
++ | 0200000000000006 | (001C) LoadoutId                | 0200000000000004                                 | 0100000000000002
++ | 0200000000000006 | (001D) Mods                     | 0200000000000005                                 | 0100000000000002
++ | 0200000000000001 | (0017) ModId                    | 0200000000000007                                 | 0100000000000003
diff --git a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=VAETHistory.verified.txt b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=VAETHistory.verified.txt
index 251d8d2b..9a0c448c 100644
--- a/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=VAETHistory.verified.txt
+++ b/tests/NexusMods.MneumonicDB.Storage.Tests/BackendTestVerifyData/RocksDB.InsertedDatomsShowUpInTheIndex_type=VAETHistory.verified.txt
@@ -1 +1,3 @@
 + | 0200000000000001 | (0017) ModId                    | 0200000000000003                                 | 0100000000000002
++ | 0200000000000006 | (001D) Mods                     | 0200000000000003                                 | 0100000000000002
+- | 0200000000000006 | (001D) Mods                     | 0200000000000007                                 | 0100000000000003
diff --git a/tests/NexusMods.MneumonicDB.Storage.Tests/Startup.cs b/tests/NexusMods.MneumonicDB.Storage.Tests/Startup.cs
index 42a9b239..6aa0684c 100644
--- a/tests/NexusMods.MneumonicDB.Storage.Tests/Startup.cs
+++ b/tests/NexusMods.MneumonicDB.Storage.Tests/Startup.cs
@@ -21,6 +21,8 @@ public void ConfigureServices(IServiceCollection services)
             .AddValueSerializer<SizeSerializer>()
             .AddValueSerializer<UriSerializer>()
             .AddAttributeCollection<FileAttributes>()
-            .AddAttributeCollection<ModAttributes>();
+            .AddAttributeCollection<ModAttributes>()
+            .AddAttributeCollection<CollectionAttributes>()
+            .AddAttributeCollection<LoadoutAttributes>();
     }
 }
diff --git a/tests/NexusMods.MneumonicDB.TestModel/ComplexModel/Attributes/CollectionAttributes.cs b/tests/NexusMods.MneumonicDB.TestModel/ComplexModel/Attributes/CollectionAttributes.cs
new file mode 100644
index 00000000..dd32f2cf
--- /dev/null
+++ b/tests/NexusMods.MneumonicDB.TestModel/ComplexModel/Attributes/CollectionAttributes.cs
@@ -0,0 +1,12 @@
+using NexusMods.MneumonicDB.Abstractions;
+
+namespace NexusMods.MneumonicDB.TestModel.ComplexModel.Attributes;
+
+public class CollectionAttributes
+{
+    public class Name : ScalarAttribute<Name, string>;
+
+    public class Mods() : ScalarAttribute<Mods, EntityId>(multiValued: true);
+
+    public class LoadoutId : ScalarAttribute<LoadoutId, EntityId>;
+}
diff --git a/tests/NexusMods.MneumonicDB.TestModel/ComplexModel/ReadModels/Collection.cs b/tests/NexusMods.MneumonicDB.TestModel/ComplexModel/ReadModels/Collection.cs
new file mode 100644
index 00000000..42a0f70e
--- /dev/null
+++ b/tests/NexusMods.MneumonicDB.TestModel/ComplexModel/ReadModels/Collection.cs
@@ -0,0 +1,41 @@
+using NexusMods.MneumonicDB.Abstractions;
+using NexusMods.MneumonicDB.Abstractions.Models;
+using NexusMods.MneumonicDB.TestModel.ComplexModel.Attributes;
+
+namespace NexusMods.MneumonicDB.TestModel.ComplexModel.ReadModels;
+
+public struct Collection(ModelHeader header) : IEntity
+{
+    public Collection(ITransaction tx) : this(tx.New()) { }
+    public ModelHeader Header { get => header; set => header = value; }
+
+    public string Name
+    {
+        get => CollectionAttributes.Name.Get(ref header);
+        init => CollectionAttributes.Name.Add(ref header, value);
+    }
+
+    public IEnumerable<EntityId> ModIds => CollectionAttributes.Mods.GetAll(ref header);
+
+    public Collection Attach(Mod mod)
+    {
+        CollectionAttributes.Mods.Add(ref header, mod.Header.Id);
+        return this;
+    }
+
+    public IEnumerable<Mod> Mods => header.Db.Get<Mod>(CollectionAttributes.Mods.GetAll(ref header));
+
+    public EntityId LoadoutId
+    {
+        get => CollectionAttributes.LoadoutId.Get(ref header);
+        init => CollectionAttributes.LoadoutId.Add(ref header, value);
+    }
+
+    public Loadout Loadout
+    {
+        get => header.Db.Get<Loadout>(LoadoutId);
+        init => CollectionAttributes.LoadoutId.Add(ref header, value.Id);
+    }
+
+
+}
diff --git a/tests/NexusMods.MneumonicDB.TestModel/ComplexModel/ReadModels/Loadout.cs b/tests/NexusMods.MneumonicDB.TestModel/ComplexModel/ReadModels/Loadout.cs
index e340b11d..7722557a 100644
--- a/tests/NexusMods.MneumonicDB.TestModel/ComplexModel/ReadModels/Loadout.cs
+++ b/tests/NexusMods.MneumonicDB.TestModel/ComplexModel/ReadModels/Loadout.cs
@@ -19,4 +19,6 @@ public string Name
     }
 
     public IEnumerable<Mod> Mods => header.GetReverse<ModAttributes.LoadoutId, Mod>();
+
+    public IEnumerable<Collection> Collections => header.GetReverse<CollectionAttributes.LoadoutId, Collection>();
 }
diff --git a/tests/NexusMods.MneumonicDB.TestModel/Services.cs b/tests/NexusMods.MneumonicDB.TestModel/Services.cs
index 4de57446..beac8f11 100644
--- a/tests/NexusMods.MneumonicDB.TestModel/Services.cs
+++ b/tests/NexusMods.MneumonicDB.TestModel/Services.cs
@@ -13,7 +13,8 @@ public static IServiceCollection AddTestModel(this IServiceCollection services)
         services.AddAttributeCollection<FileAttributes>()
             .AddAttributeCollection<ArchiveFileAttributes>()
             .AddAttributeCollection<LoadoutAttributes>()
-            .AddAttributeCollection<ModAttributes>();
+            .AddAttributeCollection<ModAttributes>()
+            .AddAttributeCollection<CollectionAttributes>();
 
         services.AddValueSerializer<RelativePathSerializer>()
             .AddValueSerializer<SizeSerializer>()
diff --git a/tests/NexusMods.MneumonicDB.Tests/ComplexModelTests.cs b/tests/NexusMods.MneumonicDB.Tests/ComplexModelTests.cs
index 82dfc742..02b93265 100644
--- a/tests/NexusMods.MneumonicDB.Tests/ComplexModelTests.cs
+++ b/tests/NexusMods.MneumonicDB.Tests/ComplexModelTests.cs
@@ -27,6 +27,18 @@ public async Task CanCreateLoadout(int modCount, int filesPerMod)
             Name = "My Loadout"
         };
 
+        var oddCollection = new Collection(tx)
+        {
+            Name = "Odd Mods",
+            Loadout = loadout
+        };
+
+        var evenCollection = new Collection(tx)
+        {
+            Name = "Even Mods",
+            Loadout = loadout
+        };
+
         var mods = new List<Mod>();
         var files = new List<File>();
 
@@ -39,6 +51,11 @@ public async Task CanCreateLoadout(int modCount, int filesPerMod)
                 Loadout = loadout
             };
 
+            if (i % 2 == 0)
+                evenCollection.Attach(mod);
+            else
+                oddCollection.Attach(mod);
+
             mods.Add(mod);
             for (var j = 0; j < filesPerMod; j++)
             {
@@ -68,6 +85,12 @@ public async Task CanCreateLoadout(int modCount, int filesPerMod)
         var totalSize = Size.Zero;
 
         loadout.Mods.Count().Should().Be(modCount, "all mods should be loaded");
+
+        loadout.Collections.Count().Should().Be(2, "all collections should be loaded");
+
+        loadout.Collections.SelectMany(c => c.Mods)
+            .Count().Should().Be(loadout.Mods.Count(), "all mods should be in a collection");
+
         sw.Restart();
         foreach (var mod in loadout.Mods)
             //totalSize += mod.Files.Sum(f => f.Size);
diff --git a/tests/NexusMods.MneumonicDB.Tests/DbTests.CanGetDatomIterator_AEVTCurrent_False.verified.txt b/tests/NexusMods.MneumonicDB.Tests/DbTests.CanGetDatomIterator_AEVTCurrent_False.verified.txt
index 49348d5f..ba439837 100644
--- a/tests/NexusMods.MneumonicDB.Tests/DbTests.CanGetDatomIterator_AEVTCurrent_False.verified.txt
+++ b/tests/NexusMods.MneumonicDB.Tests/DbTests.CanGetDatomIterator_AEVTCurrent_False.verified.txt
@@ -11,6 +11,9 @@
 + | 000000000000000B | (0001) UniqueId                 | NexusMods.MneumonicDB....tes.ModAttributes/Name  | 0100000000000002
 + | 000000000000000C | (0001) UniqueId                 | NexusMods.MneumonicDB....s.ModAttributes/Source  | 0100000000000002
 + | 000000000000000D | (0001) UniqueId                 | NexusMods.MneumonicDB....odAttributes/LoadoutId  | 0100000000000002
++ | 000000000000000E | (0001) UniqueId                 | NexusMods.MneumonicDB....lectionAttributes/Name  | 0100000000000002
++ | 000000000000000F | (0001) UniqueId                 | NexusMods.MneumonicDB....lectionAttributes/Mods  | 0100000000000002
++ | 0000000000000010 | (0001) UniqueId                 | NexusMods.MneumonicDB....onAttributes/LoadoutId  | 0100000000000002
 + | 0000000000000001 | (0002) ValueSerializerId        | NexusMods.MneumonicDB....izers/SymbolSerializer  | 0100000000000001
 + | 0000000000000002 | (0002) ValueSerializerId        | NexusMods.MneumonicDB....izers/SymbolSerializer  | 0100000000000001
 + | 0000000000000003 | (0002) ValueSerializerId        | NexusMods.MneumonicDB....RelativePathSerializer  | 0100000000000002
@@ -24,6 +27,9 @@
 + | 000000000000000B | (0002) ValueSerializerId        | NexusMods.MneumonicDB....izers/StringSerializer  | 0100000000000002
 + | 000000000000000C | (0002) ValueSerializerId        | NexusMods.MneumonicDB....ializers/UriSerializer  | 0100000000000002
 + | 000000000000000D | (0002) ValueSerializerId        | NexusMods.MneumonicDB....ers/EntityIdSerializer  | 0100000000000002
++ | 000000000000000E | (0002) ValueSerializerId        | NexusMods.MneumonicDB....izers/StringSerializer  | 0100000000000002
++ | 000000000000000F | (0002) ValueSerializerId        | NexusMods.MneumonicDB....ers/EntityIdSerializer  | 0100000000000002
++ | 0000000000000010 | (0002) ValueSerializerId        | NexusMods.MneumonicDB....ers/EntityIdSerializer  | 0100000000000002
 + | 0200000000000001 | (0003) Path                     | File3                                            | 0100000000000003
 + | 0200000000000003 | (0003) Path                     | File2                                            | 0100000000000003
 + | 0200000000000004 | (0003) Path                     | File1                                            | 0100000000000003
diff --git a/tests/NexusMods.MneumonicDB.Tests/DbTests.CanGetDatomIterator_AEVTCurrent_True.verified.txt b/tests/NexusMods.MneumonicDB.Tests/DbTests.CanGetDatomIterator_AEVTCurrent_True.verified.txt
index 3fd8d802..e7c49800 100644
--- a/tests/NexusMods.MneumonicDB.Tests/DbTests.CanGetDatomIterator_AEVTCurrent_True.verified.txt
+++ b/tests/NexusMods.MneumonicDB.Tests/DbTests.CanGetDatomIterator_AEVTCurrent_True.verified.txt
@@ -44,6 +44,9 @@
 + | 0200000000000004 | (0003) Path                     | File1                                            | 0100000000000003
 + | 0200000000000003 | (0003) Path                     | File2                                            | 0100000000000003
 + | 0200000000000001 | (0003) Path                     | File3                                            | 0100000000000003
++ | 0000000000000010 | (0002) ValueSerializerId        | NexusMods.MneumonicDB....ers/EntityIdSerializer  | 0100000000000002
++ | 000000000000000F | (0002) ValueSerializerId        | NexusMods.MneumonicDB....ers/EntityIdSerializer  | 0100000000000002
++ | 000000000000000E | (0002) ValueSerializerId        | NexusMods.MneumonicDB....izers/StringSerializer  | 0100000000000002
 + | 000000000000000D | (0002) ValueSerializerId        | NexusMods.MneumonicDB....ers/EntityIdSerializer  | 0100000000000002
 + | 000000000000000C | (0002) ValueSerializerId        | NexusMods.MneumonicDB....ializers/UriSerializer  | 0100000000000002
 + | 000000000000000B | (0002) ValueSerializerId        | NexusMods.MneumonicDB....izers/StringSerializer  | 0100000000000002
@@ -57,6 +60,9 @@
 + | 0000000000000003 | (0002) ValueSerializerId        | NexusMods.MneumonicDB....RelativePathSerializer  | 0100000000000002
 + | 0000000000000002 | (0002) ValueSerializerId        | NexusMods.MneumonicDB....izers/SymbolSerializer  | 0100000000000001
 + | 0000000000000001 | (0002) ValueSerializerId        | NexusMods.MneumonicDB....izers/SymbolSerializer  | 0100000000000001
++ | 0000000000000010 | (0001) UniqueId                 | NexusMods.MneumonicDB....onAttributes/LoadoutId  | 0100000000000002
++ | 000000000000000F | (0001) UniqueId                 | NexusMods.MneumonicDB....lectionAttributes/Mods  | 0100000000000002
++ | 000000000000000E | (0001) UniqueId                 | NexusMods.MneumonicDB....lectionAttributes/Name  | 0100000000000002
 + | 000000000000000D | (0001) UniqueId                 | NexusMods.MneumonicDB....odAttributes/LoadoutId  | 0100000000000002
 + | 000000000000000C | (0001) UniqueId                 | NexusMods.MneumonicDB....s.ModAttributes/Source  | 0100000000000002
 + | 000000000000000B | (0001) UniqueId                 | NexusMods.MneumonicDB....tes.ModAttributes/Name  | 0100000000000002
diff --git a/tests/NexusMods.MneumonicDB.Tests/DbTests.CanGetDatomIterator_EAVTCurrent_False.verified.txt b/tests/NexusMods.MneumonicDB.Tests/DbTests.CanGetDatomIterator_EAVTCurrent_False.verified.txt
index 776f5f59..aea40c7c 100644
--- a/tests/NexusMods.MneumonicDB.Tests/DbTests.CanGetDatomIterator_EAVTCurrent_False.verified.txt
+++ b/tests/NexusMods.MneumonicDB.Tests/DbTests.CanGetDatomIterator_EAVTCurrent_False.verified.txt
@@ -24,6 +24,12 @@
 + | 000000000000000C | (0002) ValueSerializerId        | NexusMods.MneumonicDB....ializers/UriSerializer  | 0100000000000002
 + | 000000000000000D | (0001) UniqueId                 | NexusMods.MneumonicDB....odAttributes/LoadoutId  | 0100000000000002
 + | 000000000000000D | (0002) ValueSerializerId        | NexusMods.MneumonicDB....ers/EntityIdSerializer  | 0100000000000002
++ | 000000000000000E | (0001) UniqueId                 | NexusMods.MneumonicDB....lectionAttributes/Name  | 0100000000000002
++ | 000000000000000E | (0002) ValueSerializerId        | NexusMods.MneumonicDB....izers/StringSerializer  | 0100000000000002
++ | 000000000000000F | (0001) UniqueId                 | NexusMods.MneumonicDB....lectionAttributes/Mods  | 0100000000000002
++ | 000000000000000F | (0002) ValueSerializerId        | NexusMods.MneumonicDB....ers/EntityIdSerializer  | 0100000000000002
++ | 0000000000000010 | (0001) UniqueId                 | NexusMods.MneumonicDB....onAttributes/LoadoutId  | 0100000000000002
++ | 0000000000000010 | (0002) ValueSerializerId        | NexusMods.MneumonicDB....ers/EntityIdSerializer  | 0100000000000002
 + | 0200000000000001 | (0003) Path                     | File3                                            | 0100000000000003
 + | 0200000000000001 | (0004) Size                     | 2 B                                              | 0100000000000003
 + | 0200000000000001 | (0005) Hash                     | 0x00000000DEADBEF1                               | 0100000000000003
diff --git a/tests/NexusMods.MneumonicDB.Tests/DbTests.CanGetDatomIterator_EAVTCurrent_True.verified.txt b/tests/NexusMods.MneumonicDB.Tests/DbTests.CanGetDatomIterator_EAVTCurrent_True.verified.txt
index 873d12e5..4499047b 100644
--- a/tests/NexusMods.MneumonicDB.Tests/DbTests.CanGetDatomIterator_EAVTCurrent_True.verified.txt
+++ b/tests/NexusMods.MneumonicDB.Tests/DbTests.CanGetDatomIterator_EAVTCurrent_True.verified.txt
@@ -44,6 +44,12 @@
 + | 0200000000000001 | (0005) Hash                     | 0x00000000DEADBEF1                               | 0100000000000003
 + | 0200000000000001 | (0004) Size                     | 2 B                                              | 0100000000000003
 + | 0200000000000001 | (0003) Path                     | File3                                            | 0100000000000003
++ | 0000000000000010 | (0002) ValueSerializerId        | NexusMods.MneumonicDB....ers/EntityIdSerializer  | 0100000000000002
++ | 0000000000000010 | (0001) UniqueId                 | NexusMods.MneumonicDB....onAttributes/LoadoutId  | 0100000000000002
++ | 000000000000000F | (0002) ValueSerializerId        | NexusMods.MneumonicDB....ers/EntityIdSerializer  | 0100000000000002
++ | 000000000000000F | (0001) UniqueId                 | NexusMods.MneumonicDB....lectionAttributes/Mods  | 0100000000000002
++ | 000000000000000E | (0002) ValueSerializerId        | NexusMods.MneumonicDB....izers/StringSerializer  | 0100000000000002
++ | 000000000000000E | (0001) UniqueId                 | NexusMods.MneumonicDB....lectionAttributes/Name  | 0100000000000002
 + | 000000000000000D | (0002) ValueSerializerId        | NexusMods.MneumonicDB....ers/EntityIdSerializer  | 0100000000000002
 + | 000000000000000D | (0001) UniqueId                 | NexusMods.MneumonicDB....odAttributes/LoadoutId  | 0100000000000002
 + | 000000000000000C | (0002) ValueSerializerId        | NexusMods.MneumonicDB....ializers/UriSerializer  | 0100000000000002
diff --git a/tests/NexusMods.MneumonicDB.Tests/DbTests.CanGetDatomIterator_TxLog_False.verified.txt b/tests/NexusMods.MneumonicDB.Tests/DbTests.CanGetDatomIterator_TxLog_False.verified.txt
index 46247dc5..b4fbafa8 100644
--- a/tests/NexusMods.MneumonicDB.Tests/DbTests.CanGetDatomIterator_TxLog_False.verified.txt
+++ b/tests/NexusMods.MneumonicDB.Tests/DbTests.CanGetDatomIterator_TxLog_False.verified.txt
@@ -24,6 +24,12 @@
 + | 000000000000000C | (0002) ValueSerializerId        | NexusMods.MneumonicDB....ializers/UriSerializer  | 0100000000000002
 + | 000000000000000D | (0001) UniqueId                 | NexusMods.MneumonicDB....odAttributes/LoadoutId  | 0100000000000002
 + | 000000000000000D | (0002) ValueSerializerId        | NexusMods.MneumonicDB....ers/EntityIdSerializer  | 0100000000000002
++ | 000000000000000E | (0001) UniqueId                 | NexusMods.MneumonicDB....lectionAttributes/Name  | 0100000000000002
++ | 000000000000000E | (0002) ValueSerializerId        | NexusMods.MneumonicDB....izers/StringSerializer  | 0100000000000002
++ | 000000000000000F | (0001) UniqueId                 | NexusMods.MneumonicDB....lectionAttributes/Mods  | 0100000000000002
++ | 000000000000000F | (0002) ValueSerializerId        | NexusMods.MneumonicDB....ers/EntityIdSerializer  | 0100000000000002
++ | 0000000000000010 | (0001) UniqueId                 | NexusMods.MneumonicDB....onAttributes/LoadoutId  | 0100000000000002
++ | 0000000000000010 | (0002) ValueSerializerId        | NexusMods.MneumonicDB....ers/EntityIdSerializer  | 0100000000000002
 + | 0200000000000001 | (0003) Path                     | File3                                            | 0100000000000003
 + | 0200000000000001 | (0004) Size                     | 2 B                                              | 0100000000000003
 + | 0200000000000001 | (0005) Hash                     | 0x00000000DEADBEF1                               | 0100000000000003
diff --git a/tests/NexusMods.MneumonicDB.Tests/DbTests.CanGetDatomIterator_TxLog_True.verified.txt b/tests/NexusMods.MneumonicDB.Tests/DbTests.CanGetDatomIterator_TxLog_True.verified.txt
index 68a8b901..788f4809 100644
--- a/tests/NexusMods.MneumonicDB.Tests/DbTests.CanGetDatomIterator_TxLog_True.verified.txt
+++ b/tests/NexusMods.MneumonicDB.Tests/DbTests.CanGetDatomIterator_TxLog_True.verified.txt
@@ -47,6 +47,12 @@
 + | 0200000000000001 | (0005) Hash                     | 0x00000000DEADBEF1                               | 0100000000000003
 + | 0200000000000001 | (0004) Size                     | 2 B                                              | 0100000000000003
 + | 0200000000000001 | (0003) Path                     | File3                                            | 0100000000000003
++ | 0000000000000010 | (0002) ValueSerializerId        | NexusMods.MneumonicDB....ers/EntityIdSerializer  | 0100000000000002
++ | 0000000000000010 | (0001) UniqueId                 | NexusMods.MneumonicDB....onAttributes/LoadoutId  | 0100000000000002
++ | 000000000000000F | (0002) ValueSerializerId        | NexusMods.MneumonicDB....ers/EntityIdSerializer  | 0100000000000002
++ | 000000000000000F | (0001) UniqueId                 | NexusMods.MneumonicDB....lectionAttributes/Mods  | 0100000000000002
++ | 000000000000000E | (0002) ValueSerializerId        | NexusMods.MneumonicDB....izers/StringSerializer  | 0100000000000002
++ | 000000000000000E | (0001) UniqueId                 | NexusMods.MneumonicDB....lectionAttributes/Name  | 0100000000000002
 + | 000000000000000D | (0002) ValueSerializerId        | NexusMods.MneumonicDB....ers/EntityIdSerializer  | 0100000000000002
 + | 000000000000000D | (0001) UniqueId                 | NexusMods.MneumonicDB....odAttributes/LoadoutId  | 0100000000000002
 + | 000000000000000C | (0002) ValueSerializerId        | NexusMods.MneumonicDB....ializers/UriSerializer  | 0100000000000002