jpa jpql advanced operations

JPA One-To-One Mapping The One-To-One mapping represents a single-valued association where an instance of one entity is associated with an instance of…

JPA Map Mapping A Map is an interface in which a unique key is associated with each value object. Thus, operations like…

JPA Table-per-class Strategy In table-per-class strategy, for each sub entity class a separate table is generated. Unlike joined strategy, no separate table…

JPA Single Table Strategy The single table strategy is one of the most simplest and efficient way to define the implementation of…

JPA Tutorial JPA tutorial provides basic and advanced concepts of Java Persistence API. Our JPA tutorial is designed for beginners and professionals.…

Update an Entity JPA allows us to change the records in database by updating an entity. JPA Entity Update Example Here, we…

Collection Mapping A Collection is a java framework that groups multiple objects into a single unit. It is used to store, retrieve…

JPA Joined strategy In joined strategy, a separate table is generated for every entity class. The attribute of each table is joined…

JPA Creating an Entity A Java class can be easily transformed into an entity. For transformation the basic requirements are: – No-argument…

JPA JPQL Advanced Operations Using JPQL, we can perform any type of database operations. Here, we will perform some advanced operations of…