Developer Guide: Data Access Objects (DAO's)

All of ThinkTank’s database interactions are encapsulated in DAO’s (Data Access Objects), contained in the model (the common directory).

DAO Method Interfaces

Let’s draft what common DAO methods should return.

• INSERT: last inserted ID (where there is an AUTO_INCREMENT primary key)
• UPDATE/DELETE: number of affected rows
• SELECT: rows as associative arrays, false if no rows returned