Coming from MusicBrainz

This page describes the key differences between the BookBrainz and MusicBrainz schemas, for developers already familiar with the MusicBrainz schema.

Entity Base Object

In BookBrainz, there is an “Entity” base object. What this means is that all entities share some common data, and store this data in a single table in the database. This greatly simplifies the rest of the database compared to MusicBrainz - instead of having a set of tables defined for each type of entity, we only need a single set of tables referencing the base table for entities.

The following fields are stored in the base table:

• gid
• master_revision_id
• last_updated