109 lines
6.4 KiB
HTML
109 lines
6.4 KiB
HTML
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<meta name="DC.Title" content="REFFLD (Referenced Field) keyword—physical files only" />
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<meta name="abstract" content="Use this field-level keyword to refer to a field under one of these three conditions." />
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<title>Physical and Logical Files, REFFLD</title>
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</head>
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<body id="preffld"><a name="preffld"><!-- --></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">REFFLD (Referenced Field) keyword—physical files only</h1>
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<div><p>Use this field-level keyword to refer to a field under one of these
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three conditions.</p>
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<div class="section"><div class="p">These conditions are: <ul><li>When the name of the referenced field is different from the name in positions
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19 through 28</li>
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<li>When the name of the referenced field is the same as the name in positions
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19 through 28, but the record format, file, or library of the referenced field
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is different from that specified with the REF keyword</li>
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<li>When the referenced field occurs in the same DDS source file as the referencing
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field</li>
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</ul>
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</div>
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<div class="p">The format of the keyword is: <pre>REFFLD([record-format-name/]referenced-field-name
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[{*SRC | [library-name/]database-file-name}])</pre>
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</div>
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<div class="p">The referenced-field-name
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is required even if it is the same as the name of the field being defined.
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Use the record-format-name when the referenced file contains more than one
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record format. Use *SRC (rather than the database-file-name) when the field
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name being referred to is in the same DDS source file as the field being defined.
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*SRC is the default value when the database-file-name and the library-name
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are not specified. <div class="note"><span class="notetitle">Note:</span> When you refer to a field in the same DDS source
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file, the field being referred to must precede the field being defined.</div>
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</div>
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<p>Specify
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the database-file-name (with its library-name, if necessary) to search a particular
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database file.</p>
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<p>An R must be in position 29. Some keywords specified
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with the field being referred to are not included on the field being defined.
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For more information, see the Reference for physical and logical files (position
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29) topic.</p>
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<p>If you specify REF at the file level and
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REFFLD at the field level in the same DDS source file, the REFFLD specification
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is used. The search sequence depends on both the REF and REFFLD keywords.</p>
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<p>You
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can specify a distributed data management (DDM) file on this keyword.</p>
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<p>When
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using a DDM file, the database-file-name and library-name are the DDM file
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and library names on the source system. The referenced-field-name and the
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record-format-name are the field name and the record format name in the remote
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file on the target system.</p>
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<div class="note"><span class="notetitle">Note:</span> Interactive data definition utility (IDDU)
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files cannot be used as reference files.</div>
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</div>
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<div class="example"><h4 class="sectiontitle">Example</h4><p>The following example shows how to code
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the REFFLD keyword.</p>
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<pre>|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
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00010A R FMAT1
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00020A ITEM 5
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00030A ITEM1 R REFFLD(ITEM)
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00040A ITEM2 R REFFLD(FMAT1/ITEM)
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00050A ITEM3 R REFFLD(ITEM FILEX)
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00060A ITEM4 R REFFLD(ITEM LIBY/FILEX)
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00070A ITEM5 R REFFLD(FMAT1/ITEM LIBY/FILEX)
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00080A ITEM6 R REFFLD(ITEM *SCR)
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A</pre>
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<p>The default for lines 00030 and 00040
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is to search the DDS source file where they are specified because the REF
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keyword is not specified. In line 00080, the parameter *SRC explicitly specifies
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this source file.</p>
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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="rzakbmstlfkeyw.htm" title="This topic lists valid keyword entries for describing physical and logical files. They are typed in positions 45 through 80 (functions).">Keyword entries for physical and logical files (positions 45 through 80)</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="pfrefer.htm" title="You use this position to specify reference for physical files only.">Reference for physical and logical files (position 29)</a></div>
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</div>
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<div class="relinfo"><strong>Related information</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>
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