60 lines
3.5 KiB
HTML
60 lines
3.5 KiB
HTML
<?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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<meta name="DC.Title" content="DDS syntax for a physical file" />
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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>DDS syntax for a physical file</title>
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</head>
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<body id="pfexam"><a name="pfexam"><!-- --></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">DDS syntax for a physical file</h1>
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<div><div class="fignone"><br /><img src="rv2f114.gif" alt="Syntax for a Physical File.
An illustration of a DDS coding form that describes a physical file." /><br /></div>
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<dl><dt class="dlterm"><span>1</span></dt>
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<dd>Comments (optional):
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Comments can appear on any line in DDS. They are identified by an asterisk
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in position 7.</dd>
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<dt class="dlterm"><span>2</span></dt>
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<dd>File level (optional): File-level keywords appear before the record format
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name (RECORD on line 00040).</dd>
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<dt class="dlterm"><span>3</span></dt>
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<dd>Record level (only one record is allowed in physical files): R in position
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17 identifies RECORD as a record format name. The record level continues until
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the first field is named.</dd>
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<dt class="dlterm"><span>4</span></dt>
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<dd>Field level (at least one field name is required, unless the FORMAT keyword
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is specified on the record): For fields in physical files, specify at least
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a name and length. Other attributes can be specified explicitly or by default.</dd>
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<dt class="dlterm"><span>5</span></dt>
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<dd>Key field level (optional): K in position 17 identifies the field as a
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key field. A K must be specified for each key field. Specify the key field
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level by repeating a field name (here, FIELDA) after the field-level specifications.</dd>
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</dl>
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<div class="note"><span class="notetitle">Note:</span> See the <a href="../rzakb/rzakbmstlfpos.htm">Positional
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entries for physical and logical files</a> topic for a description of each
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of the columns shown in the figure.</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="syntaxexam.htm" title="These topics provide syntax coding examples. Except for HLPARA, JFILE, JFLD, and PFILE, the keywords shown in these examples are not actual keywords. They indicate where you should specify the keywords.">Examples: DDS syntax coding</a></div>
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</div>
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</div>
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</body>
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</html> |