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<pre class="programlisting">db cursor
[-txn txnid] </pre>
<p>
The <span class="emphasis"><em>db</em></span> <span class="bold"><strong>cursor</strong></span>
command creates a database cursor. The returned cursor handle is
bound to a Tcl command of the form <span class="bold"><strong>dbN.cX</strong></span>, where X is an integer starting at 0
(for example, db0.c0 and db0.c1). It is through this Tcl command that
the script accesses the cursor methods.
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The options are as follows:
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<span class="bold"><strong>-txn txnid</strong></span>
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<p>
If the operation is part of an application-specified transaction, the
<span class="bold"><strong>txnid</strong></span> parameter is a transaction
handle returned from <span class="emphasis"><em>env</em></span> <span class="bold"><strong>txn</strong></span>. If no transaction handle is specified,
but the operation occurs in a transactional database, the operation
will be implicitly transaction protected.
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In the case of error, a Tcl error is thrown.
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