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<h1 class="topictitle1">SQL call level interface</h1>
<div><p>DB2<sup>®</sup> UDB
call level interface (CLI) is a callable Structured Query Language (SQL) programming
interface that is supported in all DB2 environments except for DB2 Universal
Database for z/OS<sup>®</sup> and DB2 Server
for VSE and VM.</p>
<p>A <em>callable SQL interface</em> is a WinSock
application programming interface (API) for database access that uses function
calls to start dynamic SQL statements.</p>
<p>DB2 UDB
CLI is an alternative to embedded dynamic SQL. The important difference between
embedded dynamic SQL and DB2 UDB CLI is how the SQL statements are started. On
the <span class="keyword">iSeries™</span> server, this interface
is available to any of the ILE languages.</p>
<p>DB2 UDB
CLI also provides full Level 1 Microsoft<sup>®</sup> Open Database Connectivity
(ODBC) support, plus many Level 2 functions. For the most part, ODBC is a
superset of the ANS and ISO SQL CLI standard.</p>
<div class="note"><span class="notetitle">Note:</span> By using the code examples, you agree to the terms of the <a href="codedisclaimer.htm">Code license and disclaimer information</a>.</div>
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<ul class="ullinks">
<li class="ulchildlink"><strong><a href="rzadpwhatsnew.htm">What's new for V5R4</a></strong><br />
This topic highlights numerous changes to the SQL call level interface for V5R4.</li>
<li class="ulchildlink"><strong><a href="rzadpprintthis.htm">Printable PDF</a></strong><br />
Use this to view and print a PDF of this information.</li>
<li class="ulchildlink"><strong><a href="rzadpbackground.htm">Get started with DB2 UDB CLI</a></strong><br />
Learn about the basics of the DB2 UDB CLI, how it compares to embedded
SQL, and how to select the best interface for your programming needs.</li>
<li class="ulchildlink"><strong><a href="rzadphdovv.htm">Write a DB2 UDB CLI application</a></strong><br />
Find out how you code your applications to use the DB2 CLI functions.</li>
<li class="ulchildlink"><strong><a href="rzadphdapi.htm">DB2 UDB CLI functions</a></strong><br />
This topic provides a description of each CLI function.</li>
<li class="ulchildlink"><strong><a href="rzadphdhed.htm">DB2 UDB CLI include file</a></strong><br />
The only include file used in DB2 UDB CLI is <samp class="codeph">sqlcli.h</samp>.</li>
<li class="ulchildlink"><strong><a href="rzadpsqlapd.htm">Run DB2 UDB CLI in server mode</a></strong><br />
This topic is about why and how you should run your DB2 UDB CLI applications
in server mode.</li>
<li class="ulchildlink"><strong><a href="rzadphdxmp.htm">Examples: DB2 UDB CLI applications</a></strong><br />
This topic provides complete examples of DB2 UDB CLI applications.</li>
</ul>
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