Object-relational mapping articles

Object-relational mapping products integrate object programming language capabilities with relational databases managed by Oracle, DB2, Sybase, and other relational database managers. Object-relational mapping products are designed to work well with object programming languages such as C#, C++, and Java. These articles provide a background on object-relational mapping products and their use.

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If you are interested in a listing of object-relational mapping products, click here.

Finally, in addition to the articles listed below, be sure to check out the database concepts and standards articles (new window). Many of these database concepts apply to all forms of database management systems: relational (RDBMS), object (ODBMS), XML (XDBMS), and others as well as object-relational mapping and XML-mapping products. 

	Object-relational mapping (OR mapping) definition Transparent persistence in object-relational mapping Transparent persistence vs. JDBC call-level interfaces How to access data in a relational database Java and object-relational mapping JDO and object-relational mapping C++ and object-relational mapping Navigation with object-relational mapping
	When object-relational mapping should be used
	Mapping layer Development costs with object-relational mapping products Mapping objects to tables Mapping tables to objects Caching for object-relational mapping Cache sychronization
	Writing your own mapping layer
	Using existing relational schema Type codes Relational schema for example Employee Table Programming code that uses type codes Using type codes to construct classes Support View Support Class Professor View Professor Class Instructor View Instructor Class Workstudy View Workstudy Class Tentative classes Multi-type views Teacher View Employee View Creating class hierarchy by factoring attributes Adding the Student Class to the hierarchy Adding the Person Class to the hierarchy Object schema for relational schema Checking the class hierarchy Support View equivalent from the class hierarchy Professor View equivalent from the class hierarchy Workstudy View equivalent from the class hierarchy Employee View equivalent from the class hierarchy Adding method code Using the data Leaving the data in the relational database Converting the data and storing it in an object database Leaving the data in a relational database and using an object database
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