ORDBMS articles and products

An ORDBMS (object-relational database management system) spans object and relational technology. Most products adhere to the SQL:1999 standard, but some provide a proprietary approach. This site provides articles and a product listing for ORDBMSs.

Background

Essentially, the SQL:1999 object model has all the same features as the object model used by object database management systems (ODBMSs), but in a way different from most ODBMSs. This was caused by the mandate that SQL:1999 be backward compatible to SQL-92. That mandate required adapting the SQL:1999 object model to the SQL-92 relational model. As a result, the SQL:1999 object model does not match the object model used by object programming languages. The term object-oriented cannot be used to describe this model because that would imply that the database models match object programming models. Instead, the term object-relational is used.

Products

Vendors are listed on this site with links to their respective Web sites. See the Web sites for ORDBMS.

Articles

ORDBMSs blend relational and object technology. Related topics at this site include:

DBMS concepts and standards

ODBMSs

OR mapping

RDBMSs

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