Portal Content Directory (PCD) 
Definition
The PCD is a persistent data repository for objects and their relationships. The following objects are stored in the PCD:
The PCD is used for creating folder hierarchies. These folder hierarchies are the basis for creating roles. All the objects that are relevant for roles can be added to folder hierarchies.
You can find a description of the PCD architecture under
Portal Content Directory.Use
The PCD has the following main functions: