Where to place secondary table

1. What is a secondary table?
2. What is primary table and secondary table?
3. What is secondary table in JPA?
4. How to map two tables in Hibernate?

What is a secondary table?

@SecondaryTables is the annotation in hibernate by which an entity can map more than one table to fetch the data. The entity which is fetching data should have @SecondaryTables annotations. It associates secondary table on the basis of primary and foreign key and also on the basis of unique constrains.

What is primary table and secondary table?

Referred tables: The primary table contains fields which belong to the referred secondary table. The secondary table can have other key fields which are not known to the primary table. The secondary table fields cannot be maintained, they can only be displayed.

What is secondary table in JPA?

Annotation Type SecondaryTable. Specifies a secondary table for the annotated entity class. Specifying one or more secondary tables indicates that the data for the entity class is stored across multiple tables.

How to map two tables in Hibernate?

Yes, you can map an entity to 2 database tables in 2 simple steps: You need to annotate your entity with JPA's @Table and @SecondaryTable annotations and provide the names of the first and second table as the value of the name parameters.