Database Chapter 15 Object Relational database system

The 15th Chapter Object Relational database system

Object Relational database System (OPRDBS) is a product of the combination of object-oriented data model (OO model) and relational data model.

An OO model is a model that describes the logical organization of real-world entities (objects), the constraints between objects, and the relationships between object-oriented viewpoints. The core concepts are:

Object (usually corresponds to an entity in the actual realm, including a collection of attributes and a collection of methods)

Object identifier (standalone, system globally unique)

Packaging

Class

Object-oriented database schema is a collection of classes

Database Chapter 15 Object Relational database system