Object relational database

An object-relational database (short ORDB ), and object-relational database management system (short ORDBMS ) called, is the link between traditional relational databases and object databases . They come in all applications where quantities of objects must be related to other data or objects.

more details

There are many correspondences between the relational and the object-oriented data models. The entity corresponds to the object and the entity type corresponds to the class. This basis has led to the development of object-relational DBMS , which, through a language extension with object-oriented methods and data types, have led to the improvement of the relational model and thus to the handling of complexly structured data.

An object-oriented access layer is often set via a relational database . With some access layers, the objects and their attributes are only loaded when they are actually needed in the application.

Areas of application include systems for recording geographic data ( GIS ), in which coordinates are linked to one another or reference other data. For example, several coordinate objects reference a street: the coordinates are related to a street name and are themselves objects that are related to one another.

See also

• List of database management systems
• Database - Articles about database systems and databases (EDP)

literature

• C. Türker, G. Saake: Object Relational Databases - A Textbook. dpunkt-Verlag, Heidelberg 2006, ISBN 3-89864-190-2 .