The database catalogs the entire body of church music (including uncertain and lost works) by Johann Joseph Fux (c. 1660–1741). Each entry is linked to the corresponding sources, which are also described for selected libraries.

The relational database is programmed using MySQL and can be searched according to various criteria (title, genre, number, key, instrumentation, date, etc.). Linked queries (e.g., by genre and instrumentation) are also possible.