This document describes general concepts needed for object-relational mapping. It can serve as an introduction to the issues involved in doing object-relational mapping in general and can provide the foundation for understanding a framework that tries to support that mapping.

The document starts by describing object modeling and relational modeling. It then covers how to integrate objects into the relational model followed by how to implement that integration with current database systems. Next the issues for client-server objects are covered independently from the whole mapping problem. This leads to the conclusion, which finishes the preparation for analyzing specific object-relational approaches by reviewing the topics and describing object-relational approaches.

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