# Working with CDBs in RDS for Oracle
<a name="oracle-multitenant"></a>

In the Oracle multitenant architecture, a container database (CDB) can include customer-created pluggable databases (PDBs). For more information about CDBs, see [Introduction to the Multitenant Architecture ](https://docs.oracle.com/en/database/oracle/oracle-database/19/multi/introduction-to-the-multitenant-architecture.html#GUID-267F7D12-D33F-4AC9-AA45-E9CD671B6F22) in the Oracle Database documentation.

**Topics**
+ [Overview of RDS for Oracle CDBs](Oracle.Concepts.CDBs.md)
+ [Configuring an RDS for Oracle CDB](oracle-cdb.configuring.md)
+ [Backing up and restoring a CDB](Oracle.Concepts.single-tenant.snapshots.md)
+ [Converting an RDS for Oracle non-CDB to a CDB](oracle-cdb-converting.md)
+ [Converting the single-tenant configuration to multi-tenant](oracle-single-tenant-converting.md)
+ [Adding an RDS for Oracle tenant database to your CDB instance](oracle-cdb-configuring.adding.pdb.md)
+ [Modifying an RDS for Oracle tenant database](oracle-cdb-configuring.modifying.pdb.md)
+ [Deleting an RDS for Oracle tenant database from your CDB](oracle-cdb-configuring.deleting.pdb.md)
+ [Viewing tenant database details](oracle-cdb-configuring.describing.pdb.md)
+ [Upgrading your CDB](Oracle.Concepts.single-tenant.upgrades.md)