CDDS target type refers to the function a database performs within a CDDS. The target type determines whether changes to databases can be replicated and whether collisions are detected. Target types are defined separately for each CDDS; therefore, a database can have more than one target type if it is contained in more than one CDDS.

Ingres Replicator currently supports the following types of CDDS target types to carry out replication:

A database provides services of a particular target type based on the CDDSs it contains. To plan database replication, you need to decide what role you want each database to play within each CDDS and assign one of the three target types. Your decision is based on the type of replication behavior you want the database to perform and the computing resources available in your system. By carefully analyzing how various work groups use data, you can determine which targets require full peer or read-only capabilities.