Object relationships

March 3rd, 2005

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Overview
Object relationships

Aggregation
Composition

Tags for relationships
Modeling 1:1, 1:N, N:1 and M:N

Example 1:1
Example 1:N
Example M:N

Inverse of a relationship var
Specify object relationships

Overview

A good ORM package must address the mapping of relationships among
objects. EZPDO makes object relationships mapping simple.

One major strength EZPDO has is, unlike other ORM packages, it
handles 1:N and M:N relationships automatically. […]

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Database libraries

March 3rd, 2005

hin” layer (epDb)
of database abstraction in EZPDO that wraps database
libraries. This layer provides a unified interface for EZPDO to interact with
different database abstraction libraries (DBAL), such as ADODb and PEAR::DB. (By “thin”,
we mean we strive to reduce […]

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