June 2002
Intermediate to advanced
800 pages
16h 3m
English
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5.3. PostgreSQL as an Object Relational Database
In contrast to the purely relational model, PostgreSQL provides object-oriented capabilities as well. However, PostgreSQL is not a pure object database because it can also be used for building relational models that do not use objects and features like inheritance or other object-oriented features.
In this section you will see a brief overview of PostgreSQL's object-oriented features.
5.3.1. Inheritance
Inheritance is a key feature of every object-oriented system. Just as in PHP, objects inherit from each other. However, some significant differences have to be taken into consideration. In general, two kinds of inheritance have to be distinguished.
5.3.1.1. Dynamic Inheritance
Dynamic inheritance ...
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