The music_data table stores records that define a measure's contents.

Every measure (whose record is in the measure table) contains a list of music data records.

All music data records, of whatever type, are stored in the music_data table, and the music data types are distinguished by the value in the discriminator column music_data_type.

The music_data_type discriminator values are:

Since all music data type definitions are combined into a single table using Hibernate single-table inheritance annotations, all of the music_data fields are in a single table. Thus, the music_data table itself has a long table description, but each music data record individually only uses a subset of the music_data fields to store its data, depending on the music data type.

Individual music data types are shown in the subpages of this page.

The diagram below shows the music_data table fields, with its foreign keys shown in the last column.