78 lines
4.5 KiB
HTML
78 lines
4.5 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 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="DBCS code schemes" />
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<meta name="abstract" content="IBM supports two DBCS code schemes: one for the host systems and the other for personal computers." />
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<meta name="description" content="IBM supports two DBCS code schemes: one for the host systems and the other for personal computers." />
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<meta name="DC.Relation" scheme="URI" content="rbagsenadbcs.htm" />
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<meta name="DC.Relation" scheme="URI" content="../dm/rbal3dbcs.htm" />
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<meta name="DC.Relation" scheme="URI" content="../dm/rbal3kickoff.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="rbagsdbcscodescheme" />
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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>DBCS code schemes</title>
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</head>
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<body id="rbagsdbcscodescheme"><a name="rbagsdbcscodescheme"><!-- --></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">DBCS code schemes</h1>
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<div><p>IBM<sup>®</sup> supports
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two DBCS code schemes: one for the host systems and the other for personal
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computers.</p>
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<p>The DBCS code scheme for host systems has the following code-range characteristics:</p>
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<ul><li>First byte: hex 41 to hex FE</li>
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<li>Second byte: hex 41 to hex FE</li>
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<li>Double-byte blank: hex 4040</li>
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</ul>
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<div class="section"><h4 class="sectiontitle">Shift-control characters</h4><p>When the host code scheme
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is used, the system uses shift-control characters to identify the beginning
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and end of a string of double-byte characters. The shift-out (SO) character,
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hex 0E, indicates the beginning of a double-byte character string. The shift-in
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(SI) character, hex 0F, indicates the end of a double-byte character string.</p>
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<p>Each
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shift-control character occupies the same amount of space as one alphanumeric
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character. By contrast, double-byte characters occupy the same amount of space
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as two alphanumeric characters.</p>
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<p>When double-byte characters are stored
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in a graphic field or a variable of graphic data type, there is no need to
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use shift control characters to surround the double-byte characters.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Incorrect and undefined double-byte code</h4><p>Incorrect
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double-byte code has a double-byte code value that is not in the valid double-byte
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code range. This is in contrast to undefined double-byte code where the double-byte
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code is valid, but no graphic symbol has been defined for the code.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Supported DBCS code ranges</h4><p>i5/OS™ supports
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the following DBCS character-set code ranges:</p>
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<ul><li>Japanese character-set code range</li>
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<li>Korean character-set code range</li>
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<li>Simplified Chinese character-set code range</li>
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<li>Traditional Chinese character-set code range</li>
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</ul>
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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="rbagsenadbcs.htm" title="A DBCS file is a file that contains double-byte data or is used to process double-byte data. Other files are called alphanumeric files. You can view DBCS files on display, printer, tape, diskette, and ICF devices.">Work with DBCS data</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="../dm/rbal3dbcs.htm">Double-byte character set support</a></div>
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<div><a href="../dm/rbal3kickoff.htm">Database file management</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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