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Database Systems: Concepts, Design and Applications by S. K. Singh

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15.5. Object Data Management Group (ODMG) and Object-Oriented Languages

Object-oriented languages are used to create an object database schema. As we have discussed in the earlier chapters, SQL is used as a standard language in relational DBMSs. In case of object-oriented DBMSs (OODBMSs) a consortium of OODBMSs is formed called Object Data Management Group (ODMG). Several important vendors formed ODMG that includes Sun Microsystem, eXcelon Corporation, Objectivity Inc., POET Software, Computer Associates, Versant Corporation and so on. The ODMG has been working on standardising language extensions to C++ and SmallTalk to support persistence and on defining class libraries to support persistence. The ODMG standard to object-oriented programming ...

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