After you have created your Models, it's time to save them to a datastore. DataModeler requires you to use PDO as the abstraction layer as it makes use of prepared statements and database specific extensions.

He bases it all on PDO object - created and pushed in via dependency injection. The model then uses that object and executes a "save()" containing the data created in the model request. He also talks about "dumb loads", a feature that lets the modeler think it was loaded without having to know anything more than just the object's ID number.