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- What is MappedSuperclass?
- Which inheritance strategy is better in hibernate?
- What are the three types of inheritance mapping strategies described in JPA?
- What is inheritance mapping?
What is MappedSuperclass?
A mapped superclass is a special type of class that is not persistent itself, but has subclasses that are persistent. A mapped superclass is useful for defined a common persistence superclass that defines common behavior across a set of classes, such as an id or version attribute.
Which inheritance strategy is better in hibernate?
Single Table. The single table strategy maps all entities of the inheritance structure to the same database table. This approach makes polymorphic queries very efficient and provides the best performance.
What are the three types of inheritance mapping strategies described in JPA?
Inheritance is the core concept of object oriented language, therefore we can use inheritance relationships or strategies between entities. JPA support three types of inheritance strategies such as SINGLE_TABLE, JOINED_TABLE, and TABLE_PER_CONCRETE_CLASS.
What is inheritance mapping?
In this strategy, which corresponds to InheritanceType. TABLE_PER_CLASS, each concrete class is mapped to a separate table in the database. All fields or properties in the class, including inherited fields or properties, are mapped to columns in the class's table in the database.
