jpa orm

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

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 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…

JPA Criteria Having clause The HAVING clause is used with GROUP BY clause to filter the data in a table. In Criteria…

JPA JPQL Introduction The JPQL (Java Persistence Query Language) is an object-oriented query language which is used to perform database operations on…

JPA ORDER BY Clause The ORDER BY clause is used to sort the data and arrange them either in ascending or descending…

JPA List Mapping A List is an interface which is used to insert and delete elements on the basis of index. It…