43 lines
2.6 KiB
HTML
43 lines
2.6 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">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="dc.language" scheme="rfc1766" content="en-us" />
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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 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="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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<meta name="keywords" content="description, user-defined type" />
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<title>User-defined types</title>
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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" />
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</head>
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<body>
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<a id="Top_Of_Page" name="Top_Of_Page"></a><!-- Java sync-link -->
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<script language = "Javascript" src = "../rzahg/synch.js" type="text/javascript"></script>
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<a name="udtdef"></a>
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<h2 id="udtdef"><a href="rbafzmst02.htm#ToC_36">User-defined types</a></h2><a id="idx104" name="idx104"></a>
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<p>A <span class="italic">user-defined type</span> is a data type that
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is defined to the database using a CREATE statement. A <span class="italic">distinct type</span> is a user-defined type that shares its internal representation
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with a built-in data type (its source type), but is considered to be a separate
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and incompatible data type for most operations. A distinct type is created
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with an SQL CREATE DISTINCT TYPE statement. A distinct type can be used to
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define a column of a table, or a parameter of a routine. For more information,
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see <a href="rbafzmstcrtudt.htm#crtudt">CREATE DISTINCT TYPE</a> and <a href="rbafzmstch2data.htm#ch2udf">User-defined types</a>.</p>
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<hr /><br />
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[ <a href="#Top_Of_Page">Top of Page</a> | <a href="rbafzmstviewdef.htm">Previous Page</a> | <a href="rbafzmstali.htm">Next Page</a> | <a href="rbafzmst02.htm#wq1">Contents</a> |
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<a id="Bot_Of_Page" name="Bot_Of_Page"></a>
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</body>
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</html>
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