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# Understanding TopLink Mapping and Configuration Concepts

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TopLink uses metadata (see "Understanding TopLink Metadata") to describe how objects relate to a data source representation. Your mapping and configuration activities construct this metadata.

After creating the metadata, you can use it in any number of applications by referencing the metadata from a session (see Understanding TopLink Sessions). The TopLink runtime uses this metadata in all persistence and data transformation operations.

This chapter includes information on the following:

- Mapping and Configuration Concepts

See Also

  Understanding TopLink Metadata