Data Modelling Advice for Blog Tagging system on Google App Engine

Question

Am wondering if anyone might provide some conceptual advice on an efficient way to build a data model to accomplish the simple system described below. Am somewhat new to th

Answer 1

Thanks to both of you for your suggestions. I've implemented (first iteration) as follows. Not sure if it's the best approach, but it's working.

Class A = Articles. Has a StringListProperty which can be queried on it's list elements

Class B = Tags. One entity per tag, also keeps a running count of the total number of articles using each tag.

Data modifications to A are accompanied by maintenance work on B. Thinking that counts being pre-computed is a good approach in a read-heavy environment.