JPA Map Mapping A Map is an interface in which a unique key is associated with each value object. Thus, operations like…
JPA Tutorial
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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…
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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…
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JPA Single Table Strategy The single table strategy is one of the most simplest and efficient way to define the implementation of…
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JPA Tutorial JPA tutorial provides basic and advanced concepts of Java Persistence API. Our JPA tutorial is designed for beginners and professionals.…
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Update an Entity JPA allows us to change the records in database by updating an entity. JPA Entity Update Example Here, we…
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Deleting an Entity To delete a record from database, EntityManager interface provides remove() method. The remove() method uses primary key to delete…
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JPA Object Relational Mapping Object Relational Mapping (ORM) is a functionality which is used to develop and maintain a relationship between an…
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JPA Entity Introduction In general, entity is a group of states associated together in a single unit. On adding behaviour, an entity…
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JPA One-To-Many Mapping The One-To-Many mapping comes into the category of collection-valued association where an entity is associated with a collection of…