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Comparison of object–relational database management systems

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This is a comparison of object-relational database management systems (ORDBMSs). Each system has at least some features of an object-relational 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. This article is not all-inclusive nor necessarily up to date. Unless otherwise specified in footnotes, comparisons are based on the stable versions without any add-ons, extensions or external programs.

Basic data

Name Vendor License
DB2 ? ?
GigaBASE ? ?
Greenplum ? ?
Informix ? ?
Intersystems Cache ? ?
OpenLink Virtuoso ? ?
Oracle database ? ?
PostgreSQL ? ?
Progress 4GL ? ?
? Sybase ?
UniSQL ? ?
Valentina ? ?
VMDS ? ?
Zope / ZODB ? ?

Object features

Information about what fundamental ORDBMSes features are implemented natively.

Type Method Type inheritance Table inheritance
CUBRID Yes Yes Yes Yes
LogicSQL[1] ? ? ? ?
Oracle Yes Yes[2] Yes Yes
OpenLink Virtuoso Yes Yes Yes Yes
PostgreSQL Yes Yes Yes Yes
Informix Yes Yes Yes Yes

Data types

Information about what data types are implemented natively.

Array List Set Multiset Object reference
CUBRID Yes Yes Yes Yes Yes
LogicSQL ? ? ? ? ?
Oracle Yes Yes Yes Yes Yes
OpenLink Virtuoso Yes Yes Yes Yes Yes
PostgreSQL Yes Yes Yes Yes Yes
Informix No Yes Yes Yes Yes

References

  1. ^ http://webdocs.cs.ualberta.ca/~yuan/databases/index.html
  2. ^ No private methods, no way to call super method from a child.

See also

  • Arvin.dk, Comparison of different SQL implementations
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