The following tables compare general and technical information for a number of object-relational database management systems. Please see the individual products' articles for further information. This article is not all-inclusive or necessarily up-to-date. Unless otherwise specified in footnotes, comparisons are based on the stable versions without any add-ons, extensions or external programs.
For information other than object-relational features, please refer to comparison of relational database management systems.
Fundamental features
Information about what fundamental ORDBMSes features are implemented natively.
| Type | Method | Type inheritance | Table inheritance | |
|---|---|---|---|---|
| Oracle | Yes | Yes | Yes | No |
| PostgreSQL | Yes | No | No | Yes |
| Type | Method | Type inheritance | Table inheritance |
Data types
Information about what data types are implemented natively.
| Array | List | Set | Multiset | Object reference | |
|---|---|---|---|---|---|
| Oracle | Yes | No | Yes | Yes | Yes |
| PostgreSQL | Yes | No | No | No | No |
| Array | List | Set | Multiset | Object reference |