66 lines
4.6 KiB
HTML
66 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="Manage database members" />
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<meta name="abstract" content="These topics describe the basic operations for managing database file members. Member operations unique to physical files are also included." />
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<meta name="description" content="These topics describe the basic operations for managing database file members. Member operations unique to physical files are also included." />
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<meta name="DC.subject" content="managing, database member, member" />
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<meta name="keywords" content="managing, database member, member" />
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<meta name="DC.Relation" scheme="URI" content="rbafomanage.htm" />
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<meta name="DC.Relation" scheme="URI" content="rbafomngcom.htm" />
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<meta name="DC.Relation" scheme="URI" content="rbafomngpfm.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="rbafomngmbr" />
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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>Manage database members</title>
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</head>
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<body id="rbafomngmbr"><a name="rbafomngmbr"><!-- --></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">Manage database members</h1>
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<div><p>These topics describe the basic operations for managing database
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file members. Member operations unique to physical files are
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also included.</p>
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<p>Before you perform any input or output operations on a file, the file must
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have at least one member. As a general rule, a database file has only one
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member, the one created when the file is created. The name of this member
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is the same as the file name, unless you give it a different name. Because
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most operations on a database file assume that the member being used is the
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first member in the file, and because most files only have one member, usually
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you do not have to be concerned with, or specify, member names.</p>
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<p>If a file contains more than one member, each member serves as a subset
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of the data in the file. This allows you to classify data easier. For example,
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you define an accounts receivable file. You decide that you want to keep data
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for a year in that file, but you frequently want to process data just one
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month at a time. For example, you create a physical file with 12 members,
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one named for each month. Then, you process each month's data separately (by
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individual member). You can also process several or all members together.</p>
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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="rbafomngcom.htm">Member operations common to all database files</a></strong><br />
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The system allows you to make changes to file definitions. You can use control language (CL) commands to perform most of these operations.</li>
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<li class="ulchildlink"><strong><a href="rbafomngpfm.htm">Physical file member operations</a></strong><br />
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These topics describe the member operations that are unique to physical file members. If the physical file members being operated on are associated with referential constraints, the operations might be affected.</li>
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</ul>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rbafomanage.htm" title="These topics discuss how to maintain control of database files on your system by managing the files, their descriptions and attributes. Information about how to maintain control over your data to protect it from loss, how to ensure data integrity with constraints, and how to set up trigger events when the data changes is included.">Manage database files</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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