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What Is A Foreign Key Constraint? |
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Answer» Parent table has primary key and a foreign key constraint is imposed on a column in the CHILD table. The foreign key column VALUE in the child table will always REFER to primary key values in the parent table. Parent table has primary key and a foreign key constraint is imposed on a column in the child table. The foreign key column value in the child table will always refer to primary key values in the parent table. |
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