1. A method for backing up data computed using an application in a cloud computing environment, said method comprising steps of: creating the application; modifying the application to register a servlet; publishing the application to the cloud computing environment; during execution of the application, using the servlet for: detecting annotated entities in the application; finding out properties and property types of the annotated entities; generating one or more structured query language (SQL) statements to query out data to be backed up in accordance with the annotated entities; and publishing the backed up data.