[appengine-java] Re: Best practices for datastore and JDO?

Thanks a lot for your answer. It is very helpful. We also came to the conclusion, that we would have to fit the entity types to our query needs. We were thinking about maintaining specific query views while inserting data. We just needed to here from someone else, that this was a feasible solution.

Re: [appengine-java] Re: Best practices for datastore and JDO?

Relational theory, SQL and JDBC are functional specifications and RDBMS vendors implement these specifications. Actually speaking data model has nothing to do with technology. A data model in software engineering is an abstract model

[appengine-java] Re: Best practices for datastore and JDO?

I think the gap here is that a RDBMS (PostgreSQL) and the App Engine Datastore are totally different. In fact, I think the latter influences your design much more than the former. The sorts of joins you used to be able to do in your DB to efficiently retrieve data don't work in the GAE datastore.

Re: [appengine-java] Re: Best practices for datastore and JDO?

Guillermo, We have not formally published any benchmarks yet but here are some current numbers for typical database operations. These tests were performed in client/server mode using Cloud2db JDBC driver. Cloud2db JDBC driver has ability to process queries/updates in incremental manner. This allow

[appengine-java] Re: Best practices for datastore and JDO?

Sandeep, Have you run any TPC benchmarks against Cloud2db? Cheers, Guillermo. On 5 mar, 16:07, Sandeep Sathaye wrote: > Hi Jacob, > > We just released a product called Cloud2db which could fit very well in your > architecture. Here are some details. > > Cloud2db Server provides a standards-base