Security: Contains the roles and users defined for this system.
Catalog: Contains the database objects that have been activated, for example, from design-time objects or from SQL DDL statements. The objects are divided into schemas, which is a way to organize activated database objects.
Provisioning: Contains administrator tools for configuring smart data access, data provisioning, and remote data sources
Content: Contains design-time database objects, both those that have been activated and those not activated.