olumn that is used as a foreign key
 to join to another table.

 <p>It is used to join the primary table of an entity subclass
 in the <a href="InheritanceType.html#JOINED"><code>JOINED</code></a> mapping strategy 
 to the primary table of its superclass; it is used within a 
 <a href="SecondaryTable.html" title="annotation interface in jakarta.persistence"><code>SecondaryTable</code></a> annotation to join a secondary table 
 to a primary table; and it may be used in a <a href="OneToOne.html" title="annota