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SecondaryTable.pkJoinColumns - JPA annotation element

(Optional) The columns that are used to join with the primary table.

Defaults to the column(s) of the same name(s) as the primary key column(s) in the primary table.

Default value:
JPA 1.0

This documentation page is derived (with some adjustments) from the open source JPA 2 RI (EclipseLink)
and is available under the terms of the Eclipse Public License, v. 1.0 and Eclipse Distribution License, v. 1.0.
Object Relational Mapping (ORM) JPA 2 providers include Hibernate, EclipseLink, TopLink, OpenJPA and DataNucleus.
ObjectDB is not an ORM JPA implementation but an Object Database for Java with built in JPA 2 support.