Chapter A.3. Data Mapper and Active Record
As discussed initially in Chapter 8, “RSS, Cookies, and Dynamic Views in WhatWhat Status,†SQLObject follows the Active Record design pattern. In short, this pattern says that each table in your database is represented by a Python class. Instances of those objects directly represent rows in the database table.
The Data Mapper pattern adds an extra layer. There are classes that represent the tables in the database, but there are also objects that separately map from database tables to your classes. The Data Mapper pattern has some advantages over Active Record:
Your classes are ...
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