Oracle TopLink Developer's Guide
10g Release 3 (10.1.3) B13593-01 |
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The purpose of your application's persistence layer is to use a session (see "Sessions") at run time to associate mapping metadata (see "Mapping Metadata") and a data source (see "Data Access") in order to create, read, update, and delete persistent objects using the TopLink cache (see "Cache"), queries and expressions (see "Queries and Expressions"), as well as transactions (see "Transactions").