In

Informatica MDM Hub

, a foreign key relationship establishes an association between two base objects through matching columns. In a foreign-key relationship, one base object, the child, contains a foreign key column, which contains values that match values in the primary key column of another base object, the parent. If the foreign key of a child base object points to ROWID_OBJECT of the parent base object, the foreign key of the associated child cross-reference table points to ROWID_XREF of the associated parent cross-reference table.