ORM

ORM

1. Object Relational Mapping.

Object Relational Mapping (ORM) is a software development method or framework providing an interface to a RDBMS. It is the responsibility of the ORM to translate RDBMS data types and methods into a more convenient form for use by an application.

Typically in an ORM tables are mapped to classes, and each row in a table is managed by an object.

Object Relational Mapping is also sometimes abbreviated as:

• ORM
• O/RM
• O/R mapping.

For more information see:

• http://everything.explained.at/Object-relational_mapping - Object-relational mapping explained.
• http://mag-sol.com/talks/lpm/2006/orm/ - What's wrong with ORM; covers ORM and its strengths and weaknesses.

2. Object Role Modeling.

Object Role Modeling (ORM) is the conceptual modelling of the design of a RDBMS using objects.

For more information see:

• http://everything.explained.at/Object_role_modeling/ - Object role modeling explained.