69 lines
4.0 KiB
HTML
69 lines
4.0 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="DC.Type" content="concept" />
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<meta name="DC.Title" content="Source file attributes" />
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<meta name="abstract" content="This topic outlines the attributes common to most source files and the restrictions for using these attributes." />
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<meta name="description" content="This topic outlines the attributes common to most source files and the restrictions for using these attributes." />
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<meta name="DC.subject" content="source file, attributes, types, attribute" />
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<meta name="keywords" content="source file, attributes, types, attribute" />
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<meta name="DC.Relation" scheme="URI" content="rbafocsrce.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="rbafosrcatt" />
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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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<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>Source file attributes</title>
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</head>
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<body id="rbafosrcatt"><a name="rbafosrcatt"><!-- --></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">Source file attributes</h1>
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<div><p>This topic outlines the attributes common to most source files
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and the restrictions for using these attributes.</p>
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<div class="p">Source files usually have the following attributes: <ul><li>A record length of 92 characters (this includes a 6-byte sequence number,
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a 6-byte date, and 80 bytes of source).</li>
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<li>Keys (sequence numbers) that are unique even though the access path does
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not specify unique keys. You are not required to specify a key for a source
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file. Default source files are created without keys (arrival sequence access
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path). A source file created with an arrival sequence access path requires
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less storage space and reduces save/restore time in comparison to a source
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file for which a keyed sequence access path is specified.</li>
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<li>More than one member.</li>
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<li>Member names that are the same as the names of the objects that are created
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using them.</li>
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<li>The same record format for all records.</li>
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<li>Relatively few records in each member compared to most data files.</li>
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</ul>
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</div>
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<div class="p">Some restrictions are: <ul><li>The source sequence number must be used as a key, if a key is specified.</li>
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<li>The key, if one is specified, must be in ascending sequence.</li>
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<li>The access path cannot specify unique keys.</li>
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<li>The ALTSEQ keyword is not allowed in data description specifications (DDS)
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for source files.</li>
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<li>The first field must be a 6-digit sequence number field containing zoned
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decimal data and two decimal digits.</li>
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<li>The second field must be a 6-digit date field containing zoned decimal
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data and zero decimal digits.</li>
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<li>All fields following the second field must be zoned decimal or character.</li>
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</ul>
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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="rbafocsrce.htm" title="These topics describe how to create a source file.">Create a source file</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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