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<h1 class="topictitle1">DBCS field data types</h1>
<div><p>There are two general kinds of double-byte character set (DBCS)
data: bracketed-DBCS data and graphic (nonbracketed) DBCS data. </p>
<p>Bracketed-DBCS data is preceded by a DBCS shift-out character and followed
by a DBCS shift-in character. Graphic-DBCS data is not surrounded by shift-out
and shift-in characters. The application program might require special processing
to handle bracketed-DBCS data that would not be required for graphic-DBCS
data.</p>
<div class="p">The specific DBCS data types (specified in position 35 on the DDS coding
form.) are: <dl><dt><strong>Entry</strong></dt>
<dd><strong>Meaning</strong></dd>
<dt class="dlterm">O</dt>
<dd>DBCS-open: A character string that contains both single-byte and bracketed
double-byte data.</dd>
<dt class="dlterm">E</dt>
<dd>DBCS-either: A character string that contains either all single-byte data
or all bracketed double-byte data.</dd>
<dt class="dlterm">J</dt>
<dd>DBCS-only: A character string that contains only bracketed double-byte
data.</dd>
<dt class="dlterm">G</dt>
<dd>DBCS-graphic: A character string that contains only nonbracketed double-byte
data.</dd>
</dl>
<div class="note"><span class="notetitle">Note:</span> Files containing DBCS data types can be created on a
single-byte character set (SBCS) system. Files containing DBCS data types
can be opened and used on a SBCS system, however, coded character set identifier
(CCSID) conversion errors can occur when the system tries to convert from
a DBCS or mixed CCSID to a SBCS CCSID. These errors do not occur
if the job CCSID is 65535.</div>
</div>
<div class="section" id="rbafodbcsdt__rbafodbcscst"><a name="rbafodbcsdt__rbafodbcscst"><!-- --></a><h4 class="sectiontitle">DBCS constants</h4><p>A constant identifies
the actual character string to be used. The character string is enclosed in
single quotation marks and a string of DBCS characters is surrounded by the
DBCS shift-out and shift-in characters (represented by the characters &lt;
and &gt; in the following examples). A DBCS-graphic constant is preceded by
the character <em>G</em>. </p>
<div class="p">The types of DBCS constants are: <dl><dt><strong>Type</strong></dt>
<dd><strong>Example</strong></dd>
<dt class="dlterm">DBCS-Only</dt>
<dd>'&lt;A1A2A3&gt;'</dd>
<dt class="dlterm">DBCS-Open</dt>
<dd>'&lt;A1A2A3&gt;BCD'</dd>
<dt class="dlterm">DBCS-Graphic</dt>
<dd>G'&lt;A1A2A3&gt;'</dd>
</dl>
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<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="rbafoappdbcs.htm" title="These topics describe double-byte character set (DBCS) considerations as they apply to the database on the iSeries system.">Double-byte character set considerations</a></div>
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