78 lines
5.5 KiB
HTML
78 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 http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="DDM considerations for all languages" />
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<meta name="abstract" content="DDM files can be used as data files or source files by high-level language (HLL) programs." />
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<meta name="description" content="DDM files can be used as data files or source files by high-level language (HLL) programs." />
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<meta name="DC.subject" content=", System/38, restrictions, SRCMBR parameter, all languages, SRCFILE parameter, high-level language (HLL), programming language considerations, HLL (high-level language), source file member, I/O operation, all languages, operation, input/output" />
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<meta name="keywords" content=", System/38, restrictions, SRCMBR parameter, all languages, SRCFILE parameter, high-level language (HLL), programming language considerations, HLL (high-level language), source file member, I/O operation, all languages, operation, input/output" />
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<meta name="DC.Relation" scheme="URI" content="rbae5plc.htm" />
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<meta name="DC.Relation" scheme="URI" content="rbae5hllinout.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>DDM considerations for all languages</title>
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</head>
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<body id="rbae5ddmall"><a name="rbae5ddmall"><!-- --></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 considerations for all languages</h1>
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<div><p>DDM files can be used as data files or source files by high-level
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language (HLL) programs.</p>
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<p>However, for CL, data description specifications (DDS), and BASIC, if a
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DDM file is to be used as a source file, the target server must be an <span class="keyword">iSeries™ server</span> or a <span class="keyword">System/38™</span>,
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and the file referred to by the DDM file must be defined on the target <span class="keyword">iSeries server</span> or <span class="keyword">System/38</span> as
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a source file. That is, the remote file must have been created either by the <span class="cmdname">Create
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Source Physical File (CRTSRCPF)</span> command or as FILETYPE(*SRC) by
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the <span class="cmdname">Create Physical File (CRTPF)</span> command. These restrictions
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are not enforced by the ILE RPG, ILE COBOL, and ILE C compilers, which allow
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source files to be used from both <span class="keyword">iSeries</span> and
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non-<span class="keyword">iSeries</span> target servers.</p>
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<p>If a source file <em>member</em> name is specified when the target server
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is not an <span class="keyword">iSeries server</span> or a <span class="keyword">System/38</span>, all the HLL compilers end
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compilation if the name of the source member specified on the SRCMBR parameter
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is different from the name of the DDM file specified on the SRCFILE parameter.</p>
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<p>If programs that accessed local files are to access remote files, certain
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restrictions might require that a program be changed and recompiled. And,
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if the target server is not an <span class="keyword">iSeries server</span> or
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a <span class="keyword">System/38</span>, externally described
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data must, in some cases, reside on the local (source) server. All of these
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restrictions are described under the topic Program modification requirements
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for DDM.</p>
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<p>If the target system is not an <span class="keyword">iSeries server</span> or
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a <span class="keyword">System/38</span>, the number of records
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returned in the open feedback might not be valid.</p>
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<p>If you do not specify a library name for the SRCFILE parameter, the first
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file found in the user's library list with the same name as the file you specified
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for the SRCFILE parameter is used as the source file.</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="rbae5hllinout.htm">HLL program input and output operations with i5/OS DDM</a></strong><br />
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The high-level language operations are supported by DDM for keyed or nonkeyed operations.</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="rbae5plc.htm" title="DDM is supported by these iSeries languages.">Programming language considerations for DDM</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="rbae5compile.htm" title="Remote files can be accessed by iSeries application programs written in the HLL and control language.">Program modification requirements 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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