84 lines
5.8 KiB
HTML
84 lines
5.8 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="security" content="public" />
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<meta name="Robots" content="index,follow" />
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="DDS concepts" />
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<meta name="abstract" content="This topic provides an overview of data description specifications (DDS) on iSeries servers." />
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<meta name="description" content="This topic provides an overview of data description specifications (DDS) on iSeries servers." />
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<meta name="DC.subject" content="describing data attributes, overview of DDS" />
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<meta name="keywords" content="describing data attributes, overview of DDS" />
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<meta name="DC.Relation" scheme="URI" content="print.htm" />
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<meta name="DC.Relation" scheme="URI" content="crtdds.htm" />
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<meta name="DC.Relation" scheme="URI" content="coderules.htm" />
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<meta name="DC.Relation" scheme="URI" content="rbafpmstgendbcs.htm" />
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<meta name="DC.Relation" scheme="URI" content="../rzakb/kickoff.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1999, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1999, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="kickoff" />
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<meta name="DC.Language" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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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>DDS concepts</title>
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</head>
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<body id="kickoff"><a name="kickoff"><!-- --></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">DDS concepts</h1>
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<div><p>This topic provides an overview of data description specifications
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(DDS) on <span class="keyword">iSeries™</span> servers.</p>
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<p>A traditional means of describing data attributes (such as the names and
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lengths of records and fields) is to specify the data attributes in the application
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programs themselves. However, a convenient and powerful alternative is available
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on <span class="keyword">iSeries</span> servers. Data description
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specifications (DDS) describe data attributes in file descriptions that are
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external to the application program that processes the data.</p>
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<p>The file types that use DDS are physical and logical
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files, display files, printer files, and intersystem communications function
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(ICF) files.</p>
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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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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="print.htm">Printable PDF</a></strong><br />
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Use this to view and print a PDF of this information.</li>
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<li class="ulchildlink"><strong><a href="crtdds.htm">Create a file using data description specifications (DDS)</a></strong><br />
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Use these steps to create a file using DDS.</li>
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<li class="ulchildlink"><strong><a href="coderules.htm">DDS coding rules, conventions, and terms</a></strong><br />
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When you describe data attributes with DDS, you need to be aware of specific coding rules, naming conventions, and terminology.</li>
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<li class="ulchildlink"><strong><a href="rbafpmstgendbcs.htm">General considerations for using DBCS text with DDS files</a></strong><br />
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<span>These topics describe the general considerations
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for positional entries, keyword entries, double-byte character set (DBCS)
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text literals, and DDS computer printouts that contain DBCS characters.</span></li>
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<li class="ulchildlink"><strong><a href="examples.htm">Examples: DDS coding</a></strong><br />
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<span>These topics include a wide variety of
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examples that illustrate how you can use DDS.</span></li>
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<li class="ulchildlink"><strong><a href="specref.htm">When to specify REF and REFFLD keywords for DDS files</a></strong><br />
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This topic provides information to help you decide if you want to specify the REF (reference) or REFFLD (referenced field) keyword or both. It also tells you how to specify parameter values for each REF or REFFLD keyword you specify.</li>
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<li class="ulchildlink"><strong><a href="rbafpmstbiblio.htm">Related information for DDS concepts</a></strong><br />
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Listed here are the product manuals (in PDF format) and information center topics that relate to the DDS concept topic. You can view or print any of the PDFs.</li>
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</ul>
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<div class="relinfo"><strong>Related information</strong><br />
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<div><a href="../rzakb/kickoff.htm" target="_blank">DDS for physical and logical files</a></div>
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<div><a href="../rzakc/kickoff.htm" target="_blank">DDS for display files</a></div>
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<div><a href="../rzakd/kickoff.htm" target="_blank">DDS for printer files</a></div>
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<div><a href="../rzake/kickoff.htm" target="_blank">DDS for ICF files</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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