Google I/O 2009 - The Softer Side Of Schemas - Mapping Java Persistence Standards To the Google App Engine Datastore Max Ross Google App Engine is a strong cloud-computing platform created to help builders far more quickly develop and deal with scalable net programs. With the current addition of Java support, builders can now interact with the Google App Engine datastore employing JDO and JPA, each common Java persistence APIs. In this talk we will talk about how these criteria let you to develop a "gentle schema" on top of a schema-much less datastore, and the strengths this gentle schema gives. We will also examine how the datastore's "pre-sharded" transactional product is uncovered in these normal interfaces. Ultimately, we will discuss how a soft schema maps to a classic, relational schema, and analyze some techniques for porting persistence code on and off App Engine. For presentation slides and all I/O periods, make sure you go to: code.google.com/occasions/io/sessions.html
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