Previous Next JavaScript must be enabled to correctly display this content

## 5 Utilizing Multitenant Architecture

Learn about installation choices and different scenarios associated with copying and moving pluggable databases introduced by the multitenant architecture with respect to Oracle APEX.

- Understanding the Installation Choices
  Learn about the installation choices in Oracle APEX.
- Installing APEX into an Application Container
  Learn about the Application Container that stores data and metadata for Oracle APEX application back ends.
- Installing APEX into Different PDBs
  You can install different versions of Oracle APEX into different PDBs.
- Plugging in a PDB When APEX Is Installed in the Root Container
  Learn about scenarios in which the target database has Oracle APEX installed into the root container, `CDB$ROOT` - the default installation option.
- Plugging in a PDB When APEX Is Not in the Root Container of the Target CDB
  The scenarios in this section describe when Oracle APEX is not installed in the root container, `CDB$ROOT`, by explicitly removing it as described in "Uninstalling APEX from a CDB."