69 lines
4.7 KiB
HTML
69 lines
4.7 KiB
HTML
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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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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Additional DDM concepts" />
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<meta name="abstract" content="Most users of DDM will not need the information in the remainder of these topics; it is intended primarily for experienced programmers who need to know more about DDM." />
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<meta name="description" content="Most users of DDM will not need the information in the remainder of these topics; it is intended primarily for experienced programmers who need to know more about DDM." />
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<meta name="DC.subject" content="concepts, advanced, program start request, open data path (ODP), ODP (open data path), DDM conversation" />
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<meta name="keywords" content="concepts, advanced, program start request, open data path (ODP), ODP (open data path), DDM conversation" />
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<meta name="DC.Relation" scheme="URI" content="rbae5intrdf.htm" />
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<meta name="DC.Relation" scheme="URI" content="rbae5xs3xsrc.htm" />
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<meta name="DC.Relation" scheme="URI" content="rbae5xs3xtgt.htm" />
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<meta name="DC.Relation" scheme="URI" content="rbae5jobcnvs.htm" />
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<meta name="DC.Relation" scheme="URI" content="rbae5ddmop.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1999, 2006" />
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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>Additional DDM concepts</title>
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</head>
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<body id="rbae5advcncp"><a name="rbae5advcncp"><!-- --></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">Additional DDM concepts</h1>
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<div><p>Most users of DDM will not need the information in the remainder
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of these topics; it is intended primarily for experienced programmers
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who need to know more about DDM.</p>
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<p>Described are conceptual details and examples about:</p>
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<ul><li>Program start requests, which start the TDDMs (target jobs)</li>
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<li>Open data paths (ODPs), used to access the files</li>
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<li>Remote location information</li>
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<li>DDM conversations, established for source and target communications</li>
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<li>Source and target jobs</li>
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<li>I/O operations within a job</li>
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</ul>
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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="rbae5xs3xsrc.htm">iSeries server as the source server for DDM</a></strong><br />
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When an application program or user in a source server job first refers to a DDM file, several actions occur as part of processing the request on the source server.</li>
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<li class="ulchildlink"><strong><a href="rbae5xs3xtgt.htm">iSeries server as the target server for DDM</a></strong><br />
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The <span class="keyword">iSeries™</span> target
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DDM (or TDDM) is actually a job that runs a DDM-related target server program.
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It is started when the source server sends a program start request (an SDDM).</li>
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<li class="ulchildlink"><strong><a href="rbae5jobcnvs.htm">DDM-related jobs and DDM conversations</a></strong><br />
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This topic provides additional information about activation groups, source server jobs, target server jobs, and the DDM conversations used by those jobs.</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 class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="rbae5ddmop.htm" title="This topic provides task-oriented information and examples that describe various aspects of DDM operation considerations.">Operating considerations for 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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