The Database perspective is focused on database related development, managing database connection pools, analyzing database content (such as schemas and collections) and testing queries against a connection.
The perspective is composed of the Database Navigator on the left, where you can see the database connection pools and their content (schemas, Cassandra keyspaces, MongoDB collections), as well as the queries folder. It also offers additional wizards that can be accessed from elements in the navigator that can be used to do things such as exporting database tables and MongoDB collections to Gloop models, and converting queries to their equivalent Gloop service. On the right is the query editor area where you can open, edit and run queries to analyze their results and adjust them.
To access this perspective, click the database icon on the upper right corner of Martini.