63 lines
4.6 KiB
HTML
63 lines
4.6 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 name="Robots" content="index,follow" />
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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="Use database file capabilities to control I/O operations" />
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<meta name="abstract" content="When you create a physical file, you can specify the file capabilities to control which input/output (I/O) operations are allowed for a database file independent of database file authority." />
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<meta name="description" content="When you create a physical file, you can specify the file capabilities to control which input/output (I/O) operations are allowed for a database file independent of database file authority." />
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<meta name="DC.subject" content="database file, capabilities, ALWUPD (Allow Update) parameter, Allow Update (ALWUPD) parameter, parameter, ALWUPD (Allow Update), ALWDLT (Allow Delete), ALWDLT (Allow Delete) parameter, Allow Delete (ALWDLT) parameter, object authority, editing, granting, revoking, capability" />
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<meta name="keywords" content="database file, capabilities, ALWUPD (Allow Update) parameter, Allow Update (ALWUPD) parameter, parameter, ALWUPD (Allow Update), ALWDLT (Allow Delete), ALWDLT (Allow Delete) parameter, Allow Delete (ALWDLT) parameter, object authority, editing, granting, revoking, capability" />
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<meta name="DC.Relation" scheme="URI" content="rbafosecuc.htm" />
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<meta name="DC.Relation" scheme="URI" content="../cl/crtpf.htm" />
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<meta name="DC.Relation" scheme="URI" content="../cl/crtsrcpf.htm" />
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<meta name="DC.Relation" scheme="URI" content="../cl/dspfd.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="rbafoseccap" />
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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>Use database file capabilities to control I/O operations</title>
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</head>
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<body id="rbafoseccap"><a name="rbafoseccap"><!-- --></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 database file capabilities to control I/O operations</h1>
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<div><p>When you create a physical file, you can specify the file capabilities
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to control which input/output (I/O) operations are allowed for
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a database file independent of database file authority.</p>
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<p>You can specify if the file is update-capable and delete-capable by using
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the ALWUPD and ALWDLT parameters on the Create Physical File (CRTPF) and Create
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Source Physical File (CRTSRCPF) commands. By creating a file that is not update-capable
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and not delete-capable, you can effectively enforce an environment where data
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cannot be changed or deleted from a file after the data is written.</p>
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<p>File capabilities cannot be explicitly set for logical files. The file
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capabilities of a logical file are determined by the file capabilities of
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the physical files it is based on.</p>
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<p>You cannot change file capabilities after the file is created. You must
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delete the file and then re-create it with the capability that you want. The
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Display File Description (DSPFD) command can be used to determine the capabilities
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of a 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="relref"><strong>Related reference</strong><br />
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<div><a href="../cl/crtpf.htm">Create Physical File (CRTPF) command</a></div>
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<div><a href="../cl/crtsrcpf.htm">Create Source Physical File (CRTSRCPF) command</a></div>
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<div><a href="../cl/dspfd.htm">Display File Description (DSPFD) command</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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