100 lines
5.5 KiB
HTML
100 lines
5.5 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 name="DC.Title" content="DDM files and SQL" />
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<meta name="abstract" content="You can use iSeries distributed data management (DDM) support to help you do some distributed relational database tasks within a program that also uses SQL distributed relational database support." />
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<meta name="description" content="You can use iSeries distributed data management (DDM) support to help you do some distributed relational database tasks within a program that also uses SQL distributed relational database support." />
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<meta name="DC.subject" content="commitment control, with distributed relational database and DDM jobs, DDM files, SQL commitment control, application server, commitment control for DDM jobs, application requester" />
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<meta name="keywords" content="commitment control, with distributed relational database and DDM jobs, DDM files, SQL commitment control, application server, commitment control for DDM jobs, application requester" />
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<meta name="DC.Relation" scheme="URI" content="../cl/cpyf.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 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>DDM files and SQL</title>
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</head>
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<body id="rbal1ddmsql"><a name="rbal1ddmsql"><!-- --></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 files and SQL</h1>
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<div><p>You can use <span class="keyword">iSeries™</span> distributed
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data management (DDM) support to help you do some distributed relational database
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tasks within a program that also uses SQL distributed relational database
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support.</p>
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<p>It might be faster, for example, for you to use DDM and the Copy File (CPYF)
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command to get a large number of records rather than an SQL FETCH statement.
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Also, DDM can be used to get external file descriptions of the remote system
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data brought in during compilation for use with the distributed
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relational database application. To do this, you need to use DDM as described
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in <a href="rbal1setup.htm#rbal1setup">Initial setup</a>.</p>
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<div class="p">The following example shows how you can add a relational database directory
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entry and create a DDM file so that the same job can be used on the application
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server (AS) and application requester (AR). <div class="note"><span class="notetitle">Note:</span> Either both connections
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must be protected or both connections must be unprotected for the conversation
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to be shared.</div>
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</div>
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<div class="note"><span class="notetitle">Note:</span> By using the code examples, you agree to the terms of the <a href="codedisclaimer.htm">Code license and disclaimer information</a>.</div>
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<pre><strong>Relational Database Directory:</strong>
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ADDRDBDIRE RDB(KC000) +
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RMTLOCNAME(KC000)
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TEXT('Kansas City regional database')</pre>
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<pre><strong>DDM File:</strong>
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CRTDDMF FILE(SPIFFY/UPDATE)
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RMTFILE(SPIFFY/INVENTORY)
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RMTLOCNAME(KC000)
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TEXT('DDM file to update local orders')</pre>
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<p>Here is a sample program that uses both the relational database directory
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entry and the DDM file in the same job on the remote server:</p>
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<pre>
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CRTSQL<em>xxx</em> PGM(PARTS1) COMMIT(*CHG) RDB(KC000) RDBCNNMTH(*RUW)
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PROC :PARTS1;
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OPEN SPIFFY/UPDATE;
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.
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.
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.
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CLOSE SPIFFY/UPDATE;
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.
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.
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.
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EXEC SQL
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SELECT * INTO :PARTAVAIL
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FROM INVENTORY
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WHERE ITEM = :PARTNO;
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EXEC SQL
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COMMIT;
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.
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.
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.
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END PARTS1;</pre>
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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="rbal1progdrd.htm" title="Programming considerations for a distributed relational database application on an iSeries server fall into two main categories: those that deal with a function that is supported on the local server and those that are a result of having to connect to other servers.">Programming considerations for a distributed relational database application</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="../ddm/rbae5kickoff.htm">Distributed data management</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/cpyf.htm">Copy File (CPYF) 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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