89 lines
6.0 KiB
HTML
89 lines
6.0 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html 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="security" content="public" />
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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="DC.Type" content="concept" />
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<meta name="DC.Title" content="Reference for printer files (position 29)" />
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<meta name="abstract" content="Use this position to specify R in position 29 to copy the attributes of a previously defined named field (the referenced field) to the field that you are defining. (If you do not specify R, you must specify the field attributes.)" />
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<meta name="description" content="Use this position to specify R in position 29 to copy the attributes of a previously defined named field (the referenced field) to the field that you are defining. (If you do not specify R, you must specify the field attributes.)" />
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<meta name="DC.Relation" scheme="URI" content="rzakdmstposy1.htm" />
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<meta name="DC.Relation" scheme="URI" content="../dds/specref.htm" />
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<meta name="DC.Relation" scheme="URI" content="prtlen.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzakdmstptreffl.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2001, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2001, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="prref" />
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<meta name="DC.Language" 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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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Reference for printer files (position 29)</title>
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</head>
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<body id="prref"><a name="prref"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Reference for printer files (position 29)</h1>
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<div><p>Use this position to specify R in position 29 to copy the attributes
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of a previously defined named field (the <em>referenced field</em>) to the field
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that you are defining. (If you do not specify R, you must specify the field
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attributes.) </p>
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<p>For example, you might want to reference fields for
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an externally defined file to print a report from a database file.</p>
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<p>When using the reference function, specify the referenced field name, even
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if it is the same as the referencing field. (The referenced field name can
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be in a previously created database file specified on the REF or REFFLD keywords.)
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The field attributes referenced are the length, data type, and decimal positions
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of the field, as well as the ALIAS, FLTPCN, TEXT, DATFMT, DATSEP, TIMFMT,
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TIMSEP, and editing keywords.</p>
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<p>If the referenced field name is the same as the field that you are defining,
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specify R in position 29 and the name of the field that you are defining in
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positions 19 through 28. If the referenced field is different from the field
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that you are defining, specify the name of the referenced field with the REFFLD
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keyword.</p>
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<p>Position 29 must be blank at the file and record levels.</p>
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<p>You can specify the name of the file defining the referenced field as a
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parameter value with the REF or the REFFLD keyword.</p>
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<div class="p">If you do not want to copy all the attributes from the previously defined
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field, specify those attributes for the field that you are defining, as follows:
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<ul><li>To override editing keywords (EDTCDE or EDTWRD), specify EDTCDE or EDTWRD
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for the field that you are defining. To delete these keywords, specify DLTEDT
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for the field that you are defining.</li>
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<li>Validity checking keywords (CHECK, COMP, RANGE, VALUES), if specified
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for the referenced field, are ignored in the printer file.</li>
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</ul>
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</div>
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<div class="p">When you override some specifications, others are affected: <ul><li>If you specify a value for data type, field length, or decimal positions
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for the field that you are defining, editing keywords are not copied from
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the referenced field.</li>
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<li>Packed decimal and binary fields are not supported for printer files.
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Therefore, when you reference fields of these types, the data type is converted
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to zoned decimal (S in position 35) in the printer file.</li>
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</ul>
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<div class="note"><span class="notetitle">Note:</span> After the printer file is created, the referenced
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file can be deleted or changed without affecting the field definitions in
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the printer file. To incorporate changes made in the referenced file, delete
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and re-create the printer file.</div>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzakdmstposy1.htm" title="You can find how to specify the first 44 positions of the data description specifications form for printer files in this topic.">Positional entries for printer files (positions 1 through 44)</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="../dds/specref.htm">When to specify REF and REFFLD keywords for DDS files</a></div>
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<div><a href="prtlen.htm" title="Use these positions to specify the field length for each named field (unless you copy it from a referenced field).">Length for printer files (positions 30 through 34)</a></div>
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</div>
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<div class="relref"><strong>Related reference</strong><br />
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<div><a href="rzakdmstptreffl.htm" title="Use this field-level keyword when referring to a field under one of these three conditions in this topic.">REFFLD (Referenced Field) keyword in printer files</a></div>
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</div>
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</div>
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</body>
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</html>
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