The PDR and DDR records are system records that define the schema for data records.
| Code | Description | Definition |
|---|---|---|
| PDR | Property Description Records | define the format and behaviour of standard attributes and managed attributes. |
| DDR | Dimension Description Records | define managed attributes and thus, among other characteristics, enable the creation of hierarchical standard attribute values. |
Each schema record defines the properties of an data record attribute and each attribute in that schema record is known as a schema attribute. It controls an (aspect|configuration) of the data record attribute.
It is important to add schema attribute values (PDRs and DDRs ) before loading the source records into the data domain.