.. This file is part of the OpenDSA eTextbook project. See
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.. Copyright (c) 2012-2020 by the OpenDSA Project Contributors, and
.. distributed under an MIT open source license.

.. avmetadata::
   :author: Noha
   :satisfies: Relational data model constraint
   :topic: Relational data model constraint


Relational data model constraint
================================


Entity integrity constraint
---------------------------
Referential integrity constraint
--------------------------------
semantic integrity constraint
-----------------------------