This is a comparison of objectâÂÂrelational database management systems (ORDBMSs). Each system has at least some features of an objectâÂÂrelational database; they vary widely in their completeness and the approaches taken.
The following tables compare general and technical information; please see the individual products' articles for further information. Unless otherwise specified in footnotes, comparisons are based on the stable versions without any add-ons, extensions or external programs.
Information about what fundamental ORDBMSes features are implemented natively.
Information about what data types are implemented natively.