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<p>
The Berkeley DB Tcl API does not attempt to avoid evaluating
input as Tcl commands. For this reason, it may be dangerous to
pass unreviewed user input through the Berkeley DB Tcl API, as
the input may subsequently be evaluated as a Tcl command.
Additionally, the Berkeley DB Tcl API initialization routine
resets process' effective user and group IDs to the real user
and group IDs, to minimize the effectiveness of a Tcl
injection attack.
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<p>
The Tcl API closely parallels the Berkeley DB programmatic
interfaces. If you are already familiar with one of those
interfaces, there will not be many surprises in the Tcl
API.
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<p>
The Tcl API currently does not support multithreading
although it could be made to do so. The Tcl shell itself is
not multithreaded and the Berkeley DB extensions use global
data unprotected from multiple threads.
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<p>
Several pieces of Berkeley DB functionality are not
available in the Tcl API. Any of the functions that require a
user-provided function are not supported via the Tcl API. For
example, there is no equivalent to the <a href="../api_reference/C/dbset_dup_compare.html" class="olink">DB->set_dup_compare()</a> or
<a href="../api_reference/C/envset_errcall.html" class="olink">DB_ENV->set_errcall()</a> methods. Additionally, the heap access method
is not available.
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