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Principles of Data Management - Facilitating information sharing Second edition by Keith Gordon

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15 OBJECT ORIENTATION

This chapter introduces object orientation, a programming paradigm, and then discusses in detail two approaches to handling objects in databases: the specification of an Object Definition Language from the Object Data Management Group and the extensions to SQL to make it ‘object-relational’.

WHAT IS OBJECT ORIENTATION?

Object orientation is a programming paradigm where the world is seen as a collection of objects that exhibit both state and behaviour. The state of an object at any one time is the aggregation of the values of the object’s attributes. The behaviour is the set of messages to which the object can respond. Objects respond to messages by executing methods, short pieces of program code.

Objects are grouped into ...

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