main
├── db
│ ├── create-database
│ │ ├── create-table
│ │ ├── create-column
│ │ ├── insert-row
│ │ ├── update-row
│ │ ├── delete-row
│ │ ├── select-row (query)
│ │
│ ├── view-databases
│ ├── use-database
│ │
│
├── version
├── help
├── about
├── exit
// for version check
main -v
main --version
// for help
main --help
main -h
// for about
main --about
// for create database name `defaultdb`
main db create
// for create database name user defined
main db create --name <database-name>
// for view databases
main db view all
// for view databases in path
main db view all --path <path>
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// for create a table
CREATE TABLE <table-name> {<column-name>:<column-type>}
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// for viewing json database
VIEW JSON
// for viewing specific table
VIEW JSON <table-name>
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// for insert a row
INSERT INTO <table-name> {<column-name>:<column-value>}
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