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Comparison of object–relational database management systems
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<p>This is a comparison of object–relational database management systems (ORDBMSs). Each system has at least some features of an <a href="/facts/Object%E2%80%93relational_database/XRQqqj5c">object–relational database</a>; they vary widely in their completeness and the approaches taken. </p><p>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. </p>