65 lines
2.1 KiB
HTML
65 lines
2.1 KiB
HTML
<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" lang="en-US" xml:lang="en-us"><head>
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="dc.date" scheme="iso8601" content="2005-09-19" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="security" content="public" />
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<meta name="dc.language" scheme="rfc1766" content="en-us" />
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<meta name="Robots" content="index,follow"/>
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<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))' />
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<link rel="stylesheet" type="text/css" href="ibmidwb.css" />
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<link rel="stylesheet" type="text/css" href="ic.css" /></head>
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<body>
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<pre>
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unique-constraint:
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1? CONSTRAINT <span class="italic">constraint-name</span>
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2 PRIMARY KEY
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2 UNIQUE
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3 (
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4+ ,
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4 <span class="italic">column-name</span>
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5 )
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referential-constraint:
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1? CONSTRAINT <span class="italic">constraint-name</span>
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2 FOREIGN KEY (
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3+ ,
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3 <span class="italic">column-name</span>
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4 ) <span class="italic">references-clause</span>
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references-clause:
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1 REFERENCES <span class="italic">table-name</span>
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2? (
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2.1+ ,
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2.1 <span class="italic">column-name</span>
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2.2 )
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3! ON DELETE NO ACTION
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3?
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3 ON DELETE
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3.1 RESTRICT
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3.1 CASCADE
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3.1 SET NULL
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3.1 SET DEFAULT
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3.1.1! ON UPDATE NO ACTION
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3.1.1?
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3.1.1 ON UPDATE RESTRICT
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3.1.2 (1)
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check-constraint:
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1? CONSTRAINT <span class="italic">constraint-name</span>
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2 CHECK ( <span class="italic">check-condition</span> )
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</pre>
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</body></html> |