ORM stands for Object/Relational Mapping .It is a programming technique, used in conversion of data from incompatible type to relational database. In java application, ORM is automated persistence of objects. So we can say ORM is a programming technique that works as a bridge between data of our form and table in database.

Object/Relational Mapping (ORM) is a programming technique of mapping a data representation from an object model to the relational data model with SQL based schema.