60 lines
4.1 KiB
HTML
60 lines
4.1 KiB
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.Type" content="concept" />
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<meta name="DC.Title" content="Use logical files to secure data" />
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<meta name="abstract" content="This topic discusses the ways you can use logical files to secure data." />
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<meta name="DC.subject" content="data, using, logical files to secure" />
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<title>Use logical files to secure data</title>
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</head>
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<body id="rbafoseclf"><a name="rbafoseclf"><!-- --></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">Use logical files to secure data</h1>
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<div><p>This topic discusses the ways you can use logical
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files to secure data.</p>
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<p>You can use a logical file to prevent a field in a physical file from being
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viewed. This is accomplished by describing a logical file record format that
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does not include fields you do not want the user to see.</p>
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<p>You can also use a logical file to prevent one or more fields from being
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changed in a physical file by specifying, for those fields you want to protect,
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an I (input only) in position 38 of the DDS form.</p>
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<p>You can use a logical file to secure records in a physical file based on
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the contents of one or more fields in that record. To secure records based
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on the contents of a field, use the select and omit keywords when describing
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the logical file.</p>
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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="rbafosecuc.htm" title="These topics describe the actions you can take to secure your database.">Secure a database</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="rbafodrflf.htm" title="For every logical file record format described with data description specifications (DDS), you must specify a record format name and either the PFILE keyword (for simple and multiple format logical files), or the JFILE keyword (for join logical files).">Describe logical file record formats</a></div>
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<div><a href="rbafodeffd.htm" title="You can specify that the fields in logical files are to be input-only, both (input/output), or neither fields.">Describe field use for logical files</a></div>
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<div><a href="rbafosorec.htm" title="The system can select and omit records when using a logical file. This can help you exclude records in a file for processing convenience or for security.">Select and omit records using logical files</a></div>
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