Data Persistence
This chapter explains how to transform object-oriented models into relational databases and also how to load and save data automatically. Initially the object-relational mapping (ORM) technique, used to convert objects into relational database records, is explained. Then, we present a persistence mechanism based on virtual proxies, brokers, and caches.
Keywords
broker; commit; lazy load; object-relational mapping; ORM; relational database; rollback; virtual cache; virtual proxy
Key Topics in this Chapter
• Object-relational mapping (ORM)
• Virtual proxy
• Brokers
• Virtual caches
13.1 Introduction to data persistence
The availability of persistence mechanisms for commercial languages1 has made database design much easier ...
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