Google Datastore and the shift from a RDBMS

Google Datastore and the shift from a RDBMS: "Diving into the Datastore docs to get a grip on what’s the best way to implement it shed some light on the transition any developer thinking about writing data-backed apps for GAE (Google App Engine) will need to tackle.

Some notes on terminology, Google has Entities, Kinds, and Properties. These correspond roughly to Rows, Tables, and Columns in RDBMS-speak. Kinds can also be called classes, because in the Python API, you create a class and inherit from the appropriate datastore class. Entities may also be referred to as instances, since performing a query returns a list of objects (instances)."