one-to-many.sql is dump from an example database that shows how to denormalize a typical 1:N relation between blog article and article image tables.
There is a denormalization procedure that is called by triggers on INSERT,UPDATE and DELETE on the article_image table.
The image data is stored in a images field in json format on the article table.
At the bottom of the file there are several inserts that will fill the database with example data to ilustrate the denormalized relation.