64 lines
4.3 KiB
HTML
64 lines
4.3 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="concept" />
|
|
<meta name="DC.Title" content="Define fields derived from existing field definitions" />
|
|
<meta name="abstract" content="Listed here are the operations allowed by defining fields derived from existing field definitions." />
|
|
<meta name="description" content="Listed here are the operations allowed by defining fields derived from existing field definitions." />
|
|
<meta name="DC.subject" content="defining, fields, field definition, derived from existing field definitions, example, fields derived from existing field definitions" />
|
|
<meta name="keywords" content="defining, fields, field definition, derived from existing field definitions, example, fields derived from existing field definitions" />
|
|
<meta name="DC.Relation" scheme="URI" content="rbafodynrs.htm" />
|
|
<meta name="DC.Relation" scheme="URI" content="rbafofdefdex1.htm" />
|
|
<meta name="DC.Relation" scheme="URI" content="rbafofdefdex2.htm" />
|
|
<meta name="DC.Relation" scheme="URI" content="rbafofdefdex3.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="rbafofdefd" />
|
|
<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>Define fields derived from existing field definitions</title>
|
|
</head>
|
|
<body id="rbafofdefd"><a name="rbafofdefd"><!-- --></a>
|
|
<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
|
|
<h1 class="topictitle1">Define fields derived from existing field definitions</h1>
|
|
<div><p>Listed here are the operations allowed by defining fields derived
|
|
from existing field definitions.</p>
|
|
<div class="p">Mapped field definitions: <ul><li>Allow you to create internal fields that specify selection values, as
|
|
shown in <a href="rbafoqrymapf.htm#rbafoqrymapf">Example 7: Select records using the Open Query File (OPNQRYF) command</a> .</li>
|
|
<li>Allow you to avoid confusion when the same field name occurs in multiple
|
|
files, as shown in <a href="rbafodynjfex1.htm#rbafodynjfex1">Example 1: Dynamically join database files without DDS</a> .</li>
|
|
<li>Allow you to create fields that exist only in the format to be processed,
|
|
but not in the database itself. This allows you to perform translate, substring,
|
|
concatenation, and complex mathematical operations. The following
|
|
examples describe this function.</li>
|
|
</ul>
|
|
</div>
|
|
</div>
|
|
<div>
|
|
<ul class="ullinks">
|
|
<li class="ulchildlink"><strong><a href="rbafofdefdex1.htm">Example 1: Define fields derived from existing field definitions</a></strong><br />
|
|
This example shows the use of derived fields.</li>
|
|
<li class="ulchildlink"><strong><a href="rbafofdefdex2.htm">Example 2: Define fields derived from existing field definitions</a></strong><br />
|
|
This example shows the use of built-in functions.</li>
|
|
<li class="ulchildlink"><strong><a href="rbafofdefdex3.htm">Example 3: Define fields derived from existing field definitions</a></strong><br />
|
|
This example shows the use of derived fields and built-in functions.</li>
|
|
</ul>
|
|
|
|
<div class="familylinks">
|
|
<div class="parentlink"><strong>Parent topic:</strong> <a href="rbafodynrs.htm" title="Dynamic record selection allows you to request a subset of the records in a file without using data description specifications (DDS).">Select records without using DDS</a></div>
|
|
</div>
|
|
</div>
|
|
</body>
|
|
</html> |