August 2009
Intermediate to advanced
893 pages
26h 48m
English
Content preview from Database Systems: Concepts, Design and Applications
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
Start your free trial
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 ...