Comparison of object–relational database management systems

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. 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	OS	Notes
Adaptive Server Enterprise	SAP	Proprietary	Cross-platform
Caché	InterSystems	Proprietary	Cross-platform
CUBRID	NHN Corporation	GPL/BSD	Linux, Windows
IBM Db2	IBM	Proprietary	Cross-platform
GigaSpaces	GigaSpaces	Apache-2.0 or Proprietary	Cross-platform
Greenplum Database	Greenplum division of EMC Corporation	Proprietary	?	Uses PostgreSQL codebase
Informix	IBM	Proprietary	Cross-platform
Microsoft SQL Server	Microsoft Corporation	Proprietary	Windows, Linux	Supports data objects in .NET languages
OpenEdge Advanced Business Language (formerly Progress 4GL)	Progress Software Corporation	Proprietary	Cross-platform
Oracle Database	Oracle Corporation	Proprietary	Linux, Windows, Unix
PostgreSQL	PostgreSQL Global Development Group	PostgreSQL License	Cross-platform
Virtuoso Universal Server	OpenLink Software	GPLv2 or proprietary	Cross-platform
VMDS (Version Managed Data Store)	GE Energy, a division of General Electric	Proprietary	?	GIS for public utilities; can be stored inside Oracle Database
WakandaDB	4th Dimension	AGPLv3 or proprietary	Windows, Linux, macOS	Based on REST and server-side JavaScript
XDB Enterprise Server	Micro Focus	Proprietary	DOS, Windows NT, OS/2
YugabyteDB	Yugabyte	Apache 2.0	Linux
Zope Object Database	Zope Corporation	Zope Public License	Cross-platform	For Python, also included in Zope web application server