OR mapping articles and products

OR mapping is used to map object-oriented programming objects to relational databases managed by Oracle, DB2, Sybase, and other relational database managers (RDBMSs). This site provides facts about OR mapping products, architecture problem-solving, and direction in product comparison and selection.

OR mapping products are designed to work well with object programming languages such as C#, C++, and Java. Database objects appear as programming language objects. Often, the interface for these products is the same as the interface for object-oriented databases.

OR mapping products should be be used when you want to take advantage of transparent persistence and use an RDBMS. An RDBMS may be required because:

	The data already resides in an RDBMS
	The data is new, but there are technical/political reasons for using an RDBMS

An OR mapping product will likely reduce your programming code and, through caching, improve performance over using an embedded SQL or call-level interface such as JDBC or ODBC when using an RDBMS. The performance cost of using RDBMSs with objects can be reduced because most mapping products provide transparent persistence with object programming languages and caching. More on these topics can be found in the articles mentioned in the next section.

Articles

Using OR mapping instead of JDBC or ODBC can reduce your development time and improve your performance. Interested in how these products work? Want to know when you should consider using these products? What are some architectures that take advantage of these products yet preserve your existing database investment? These articles provide answers to these questions and more. Check out the articles on OR mapping.

Product vendors

Vendors are listed on this site with links to their respective Web sites. Click here for vendors.

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Related products on this Web site

OR mapping products can used to build software architectures with many of the following products described on this site. Be sure to check out these products:

	Web Services
	Application servers
	Relational databases
	Object-relational databases
	Object-oriented databases
	XML databases
	XML middleware