59 lines
3.9 KiB
HTML
59 lines
3.9 KiB
HTML
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<meta name="DC.Title" content="DDM example 2: Remote server ORDERENT files" />
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<meta name="abstract" content="The ORDERENT program remains the same at all locations, but the CUSTMST2 file is now a copy of the central server's customer primary file CUSTMAST." />
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<title>DDM example 2: Remote server ORDERENT files</title>
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</head>
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<body id="rbae5apaex2c"><a name="rbae5apaex2c"><!-- --></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">DDM example 2: Remote server ORDERENT files</h1>
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<div><p>The ORDERENT program remains the same at all locations, but the
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CUSTMST2 file is now a <em>copy</em> of the central server's customer primary
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file CUSTMAST.</p>
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<div class="section"><p>By using CUSTMST2 whenever possible for data that does not change
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often, the amount of communications time needed to process each order entry
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request can be minimized. The remote ORDERENT program reads the
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local CUSTMST2 file at the beginning of each order, and then, using DDM, updates
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the CUSTMAST file on the central server only when an order has been completed.</p>
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</div>
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<div class="section"><p>The other two files, INVEN and DETAIL, have the same functions
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on each remote server as on the central server.</p>
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</div>
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<div class="example"> <div class="fignone" id="rbae5apaex2c__rmtoe"><a name="rbae5apaex2c__rmtoe"><!-- --></a><span class="figcap">Figure 1. Files used by remote ORDERENT programs</span><br /><img src="rsll117.gif" alt="The files used by the ORDERENT programs are CUSTMAST, CUSTMST2, INVEN, and DETAIL." /><br /></div>
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</div>
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<div class="section"><p>The CUSTMAST file is changed by all locations and contains the
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most current information for each customer (for constantly changing data such
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as the customer's account balance). The CUSTMST2 file, which is used for reading
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data that changes only occasionally (such as name and address), should be
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changed periodically (once a week, for example), by recopying the CUSTMAST
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file into it. Task 2 of this example explains one way to do this.</p>
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</div>
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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="rbae5apaex2.htm" title="This second example shows how multiple locations in a customer's business can process the same order entry application using DDM.">DDM example 2: ORDERENT application</a></div>
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