1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
<!--$Id: count.so,v 1.3 2000/12/18 21:05:13 bostic Exp $-->
<!--Copyright 1997, 1998, 1999, 2000 by Sleepycat Software, Inc.-->
<!--All rights reserved.-->
<html>
<head>
<title>Berkeley DB Reference Guide: Data item count</title>
<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit.">
<meta name="keywords" content="embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,java,C,C++">
</head>
<body bgcolor=white>
<a name="2"><!--meow--></a>
<table><tr valign=top>
<td><h3><dl><dt>Berkeley DB Reference Guide:<dd>Access Methods</dl></h3></td>
<td width="1%"><a href="../../ref/am/join.html"><img src="../../images/prev.gif" alt="Prev"></a><a href="../../ref/toc.html"><img src="../../images/ref.gif" alt="Ref"></a><a href="../../ref/am/curclose.html"><img src="../../images/next.gif" alt="Next"></a>
</td></tr></table>
<p>
<h1 align=center>Data item count</h1>
<p>Once a cursor has been initialized to reference a particular key in the
database, it can be used to determine the number of data items that are
stored for any particular key. The <a href="../../api_c/dbc_count.html">DBcursor->c_count</a> method returns
this number of data items. The returned value is always one, unless
the database supports duplicate data items, in which case it may be any
number of items.
<table><tr><td><br></td><td width="1%"><a href="../../ref/am/join.html"><img src="../../images/prev.gif" alt="Prev"></a><a href="../../ref/toc.html"><img src="../../images/ref.gif" alt="Ref"></a><a href="../../ref/am/curclose.html"><img src="../../images/next.gif" alt="Next"></a>
</td></tr></table>
<p><font size=1><a href="http://www.sleepycat.com">Copyright Sleepycat Software</a></font>
</body>
</html>
|
