56 lines
3.8 KiB
HTML
56 lines
3.8 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 name="DC.Type" content="reference" />
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<meta name="DC.Title" content="Understand large object data types (BLOB, CLOB, DBCLOB)" />
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<meta name="abstract" content="The large object data types are defined here." />
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<meta name="description" content="The large object data types are defined here." />
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<meta name="DC.subject" content="LOBs (Large Objects), control information to access large object data" />
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<meta name="keywords" content="LOBs (Large Objects), control information to access large object data" />
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<meta name="DC.Relation" scheme="URI" content="rbafylobs.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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<title>Understand large object data types (BLOB, CLOB, DBCLOB)</title>
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</head>
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<body id="rbafyobjlob"><a name="rbafyobjlob"><!-- --></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">Understand large object data types (BLOB, CLOB, DBCLOB)</h1>
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<div><p>The large object data types are defined here.</p>
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<div class="section"><ul><li>Binary large objects (BLOBs) — A binary string made up
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of bytes with no associated code page. This data type can store binary data
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larger than VARBINARY (32K limit). This data type is good for storing image,
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voice, graphical, and other types of business or application-specific data.</li>
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<li>Character large objects (CLOBs) — A character string made up of single-byte
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characters with an associated code page. This data type is appropriate for
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storing text-oriented information where the amount of information can grow
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beyond the limits of a regular VARCHAR data type (upper limit of 32K bytes).
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Code page conversion of the information is supported.</li>
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<li>Double-byte character large objects (DBCLOBs) — A character string made
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up of double-byte characters with an associated code page. This data type
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is appropriate for storing text-oriented information where double-byte character
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sets are used. Again, code page conversion of the information is supported.</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="rbafylobs.htm" title="The VARCHAR, VARGRAPHIC, and VARBINARY data types have a limit of 32 KB (where KB equals 1024 bytes) of storage. While this may be sufficient for small to medium-size text data, applications often need to store large text documents. They might also need to store a wide variety of additional data types such as audio, video, drawings, mixed text and graphics, and images. There are three data types to store these data objects as strings of up to 2 GB (where GB equals 1 073 741 824 bytes).">Use large objects (LOBs)</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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