66 lines
4.7 KiB
HTML
66 lines
4.7 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.Title" content="Parts of DDM" />
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<meta name="abstract" content="DDM consists of several parts to handle remote file processing among the systems using DDM." />
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<meta name="DC.Relation" scheme="URI" content="rbae5partsddm.htm" />
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<title>Parts of DDM</title>
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<body id="rbae5partsofddm"><a name="rbae5partsofddm"><!-- --></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">Parts of DDM</h1>
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<div><p>DDM consists of several parts to handle remote file processing
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among the systems using DDM.</p>
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<ul><li>Source DDM (SDDM)</li>
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<li>Target DDM (TDDM)</li>
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<li>DDM file</li>
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</ul>
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<div class="fignone" id="rbae5partsofddm__rbae5srctgt2"><a name="rbae5partsofddm__rbae5srctgt2"><!-- --></a><span class="figcap">Figure 1. Communicate with
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DDM</span><br /><img src="rsll103.gif" alt="The figure shows how the basic parts involved in DDM communications on both systems relate to each other. When a DDM file is accessed by a source system user or program, a DDM conversation is started between SDDM and TDDM for the job in which the program or user is operating." /><br /></div>
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<p>The preceding figure shows how the basic parts involved in DDM communications
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on both systems relate to each other.</p>
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<p>When a DDM file is accessed by a source system user or program, a DDM conversation
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is started between SDDM and TDDM for the job in which the program or user
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is operating.</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="rbae5partsddm.htm">Parts of DDM: Source DDM</a></strong><br />
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The support on the source (or local) <span class="keyword">iSeries™ server</span> is
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started, as needed, within a source job to do DDM functions.</li>
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<li class="ulchildlink"><strong><a href="rbae5parttddm.htm">Parts of DDM: Target DDM</a></strong><br />
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A target server job is started on the target (or remote) server as a result of an incoming DDM request and ends when the associated DDM conversation ends.</li>
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<li class="ulchildlink"><strong><a href="rbae5partfile.htm">Parts of DDM: DDM file</a></strong><br />
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A system object with type *FILE exists on the source server to identify a remote file. It combines the characteristics of a device file and a database file. As a device file, the DDM file refers to a remote location name, local location name, device name, mode, and a remote network ID to identify a remote server as the target server. The DDM file appears to the application program as a database file and serves as the access device between a source server program and a remote file.</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="rbae5intrdf.htm" title="This topic describes the purpose of distributed data management (DDM), the functions that DDM supplies on the iSeries server, and the concepts of i5/OS DDM.">Introduction to i5/OS DDM</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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