4 Understanding Descriptors

Oracle Application Server TopLink uses descriptors to store the information that describes how an instance of a particular class can be represented in a relational database. Most descriptor information can be defined by the OracleAS TopLink Mapping Workbench and read from a project file to be registered with an OracleAS TopLink Mapping Workbench session.

For complete information on the OracleAS TopLink API, refer to the Oracle Application Server TopLink API Reference.

Note: In this document, descriptors refers to OracleAS TopLink Mapping Workbench descriptors; deployment descriptors refers to EJB deployment descriptors.