This website is archiving the documentation of versions prior to 7.3. You can visit the New Bonita BPM Documentation website for versions 7.3 and greater.
Documentation- Legacy -
The graphical query builder helps you configure a database connector by showing you the structure of database content to help you construct the database query.
It works the same way for all database connectors. There are two stages: first connect to the database, then build a query.