Whilst the Amazon Web Services (AWS) cloud computing platform has had Amazon Relational Database Service (Amazon RDS) in beta for some time, Google App Engine (GAE) has been missing a relational database service. Developers have had to be content with using GAE’s own proprietary datastore essentially as an object store.
Google has announced the beta version of a relational data store, Google Cloud SQL, which gives developers using GAE the opportunity to use a MySQL-compatible interface with JDBC (Java) and DB-API (Python) support. Use of Google Cloud SQL is subject to application.