80 lines
4.9 KiB
HTML
80 lines
4.9 KiB
HTML
<?xml version="1.0" encoding="UTF-8"?>
|
|
<!DOCTYPE html
|
|
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
|
|
<html lang="en-us" xml:lang="en-us">
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
|
|
<meta name="security" content="public" />
|
|
<meta name="Robots" content="index,follow" />
|
|
<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
|
|
<meta name="DC.Type" content="task" />
|
|
<meta name="DC.Title" content="Remove referential constraints" />
|
|
<meta name="abstract" content="You can remove referential constraints in various ways. The full impact of the removal depends on the constraint you are removing and the certain conditions that surround the constraint." />
|
|
<meta name="description" content="You can remove referential constraints in various ways. The full impact of the removal depends on the constraint you are removing and the certain conditions that surround the constraint." />
|
|
<meta name="DC.Relation" scheme="URI" content="rbaforzahfrca.htm" />
|
|
<meta name="DC.Relation" scheme="URI" content="rbaforzahfrc1.htm" />
|
|
<meta name="DC.Relation" scheme="URI" content="rbaforzahfrc2.htm" />
|
|
<meta name="DC.Relation" scheme="URI" content="../cl/rmvpfcst.htm" />
|
|
<meta name="DC.Relation" scheme="URI" content="../rzatc/rzatcgetstartinav.htm" />
|
|
<meta name="DC.Relation" scheme="URI" content="../sqlp/rbafykickoff.htm" />
|
|
<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
|
|
<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1998, 2006" />
|
|
<meta name="DC.Format" content="XHTML" />
|
|
<meta name="DC.Identifier" content="rbaforzahfrc0" />
|
|
<meta name="DC.Language" content="en-us" />
|
|
<!-- All rights reserved. Licensed Materials Property of IBM -->
|
|
<!-- US Government Users Restricted Rights -->
|
|
<!-- Use, duplication or disclosure restricted by -->
|
|
<!-- GSA ADP Schedule Contract with IBM Corp. -->
|
|
<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
|
|
<link rel="stylesheet" type="text/css" href="./ic.css" />
|
|
<title>Remove referential constraints</title>
|
|
</head>
|
|
<body id="rbaforzahfrc0"><a name="rbaforzahfrc0"><!-- --></a>
|
|
<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
|
|
<h1 class="topictitle1">Remove referential constraints</h1>
|
|
<div><p>You can remove referential constraints in various ways. The full
|
|
impact of the removal depends on the constraint you are removing and the certain
|
|
conditions that surround the constraint.</p>
|
|
<div class="section"> <p>To remove a referential constraint, follow these steps:</p>
|
|
</div>
|
|
<ol><li class="stepexpand"><span>Run the Remove Physical File Constraint (RMVPFCST) command.</span></li>
|
|
<li class="stepexpand"><span>Specify the constraint or constraints you want to remove using
|
|
the CST and TYPE parameters.</span> <ul><li>Use the CST parameter to specify all constraints or a specific constraint
|
|
name.</li>
|
|
<li>Use the TYPE parameter to specify a particular type of constraint.</li>
|
|
</ul>
|
|
</li>
|
|
</ol>
|
|
<div class="section"> <p>You can also remove a referential constraint using iSeries™ Navigator. </p>
|
|
<p>When
|
|
you remove a referential constraint, the system removes the associated foreign
|
|
keys and access paths from the file. The system does not remove the foreign
|
|
key access path if any logical file or other constraint on the system uses
|
|
it.</p>
|
|
<p>If you remove a referential, primary key, or unique constraint,
|
|
and the associated access path is shared by a logical file, the ownership
|
|
of the shared path transfers to the logical file.</p>
|
|
</div>
|
|
</div>
|
|
<div>
|
|
<ul class="ullinks">
|
|
<li class="ulchildlink"><strong><a href="rbaforzahfrc1.htm">Details: Remove a constraint with the CST parameter</a></strong><br />
|
|
This topic discusses the constraints that you can remove with the CST parameter.</li>
|
|
<li class="ulchildlink"><strong><a href="rbaforzahfrc2.htm">Details: Remove a constraint with the TYPE parameter</a></strong><br />
|
|
This topic discusses the constraints that you can remove with the TYPE parameter.</li>
|
|
</ul>
|
|
|
|
<div class="familylinks">
|
|
<div class="parentlink"><strong>Parent topic:</strong> <a href="rbaforzahfrca.htm" title="These topics discuss how to use referential constraints in your database to ensure that it contains only valid data.">Ensure data integrity with referential constraints</a></div>
|
|
</div>
|
|
<div class="relconcepts"><strong>Related concepts</strong><br />
|
|
<div><a href="../rzatc/rzatcgetstartinav.htm">Get started with iSeries Navigator</a></div>
|
|
<div><a href="../sqlp/rbafykickoff.htm">SQL programming</a></div>
|
|
</div>
|
|
<div class="relref"><strong>Related reference</strong><br />
|
|
<div><a href="../cl/rmvpfcst.htm">Remove Physical File Constraint (RMVPFCST) command</a></div>
|
|
</div>
|
|
</div>
|
|
</body>
|
|
</html> |