83 lines
4.5 KiB
HTML
83 lines
4.5 KiB
HTML
<?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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<meta name="DC.Type" content="reference" />
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<meta name="DC.Title" content="Large objects (LOBs) considerations" />
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<meta name="abstract" content="Use LOBs with iSeries Access for Windows ODBC to store and access large text documents." />
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<meta name="description" content="Use LOBs with iSeries Access for Windows ODBC to store and access large text documents." />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1999, 2006" />
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<title>Large objects (LOBs) considerations</title>
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</head>
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<body id="odbclobdatalink"><a name="odbclobdatalink"><!-- --></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">Large objects (LOBs) considerations</h1>
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<div><p>Use LOBs with iSeries™ Access for Windows<sup>®</sup> ODBC to store and access large
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text documents. </p>
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<div class="section"> <dl><dt class="dlterm">Large objects (LOBs):</dt>
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<dd>Large object (LOB) data types allow applications to store large data objects
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as strings. On V5R1, and earlier servers, the ODBC driver could access LOB
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fields that were 15 MB or less in size. On V5R2 and later servers the ODBC
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driver can access 2 GB LOBs. </dd>
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<dd class="ddexpand">When uploading large LOB data fields to the server, it is recommended
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that you use the SQLParamData and SQLPutData APIs. The SQLPutData API sends
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the LOB data to the server as it is received and reduces the amount of memory
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needed on the client.</dd>
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<dd class="ddexpand"><dl><dt class="dlterm">LOB data types:</dt>
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<dd> <dl><dt class="dlterm">BLOB</dt>
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<dd>Binary large data objects</dd>
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<dt class="dlterm">CLOB</dt>
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<dd>Single-byte large character data objects</dd>
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<dt class="dlterm">DBCLOB</dt>
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<dd>Double-byte character large data objects</dd>
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</dl>
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</dd>
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<dt class="dlterm">To view an example that uses the BLOB data type:</dt>
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<dd>See <a href="rzaikblobex.htm">Example: Use the BLOB data type</a></dd>
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<dt class="dlterm">For more information on LOBs:</dt>
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<dd>See the <strong>Using Large Objects</strong> topic under the <strong>Using the Object-Relational
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Capabilities</strong> heading in the <a href="../sqlp/rbafykickoff.htm">SQL Programming Concepts</a> Information Center topic.</dd>
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</dl>
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</dd>
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</dl>
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</div>
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<div class="section"> <dl><dt class="dlterm">DataLinks:</dt>
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<dd>DataLink data types allow you to store many types of data in a database.
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Data is stored as a uniform resource locator (URL). The URL points to an object,
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which might be an image file, sound file, text file, and so forth. <dl><dt class="dlterm">For more information on DataLinks:</dt>
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<dd>See the <strong>Using DataLinks</strong> topic under the <strong>Processing special data
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types</strong> heading in the <a href="../sqlp/rbafykickoff.htm">SQL Programming Concepts</a> Information Center topic.</dd>
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</dl>
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</dd>
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</dl>
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</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="rzaikblobex.htm">Example: Use the BLOB data type</a></strong><br />
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</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="rzaikodbcapifunctions.htm" title="Learn about implementations issues when using ODBC APIs.">Implementation issues of ODBC APIs</a></div>
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</div>
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</div>
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</body>
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</html> |