<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html lang="en-us" xml:lang="en-us"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="security" content="public" /> <meta name="Robots" content="index,follow" /> <meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' /> <meta name="DC.Type" content="concept" /> <meta name="DC.Title" content="API environments" /> <meta name="abstract" content="This topic introduces the operating environments that i5/OS APIs exist on a system." /> <meta name="description" content="This topic introduces the operating environments that i5/OS APIs exist on a system." /> <meta name="DC.Relation" scheme="URI" content="concept.htm" /> <meta name="DC.Relation" scheme="URI" content="opmOverview.htm" /> <meta name="DC.Relation" scheme="URI" content="ileOverview.htm" /> <meta name="DC.Relation" scheme="URI" content="ileCEE.htm" /> <meta name="DC.Relation" scheme="URI" content="opmIlecompare.htm" /> <meta name="DC.Relation" scheme="URI" content="unixType.htm" /> <meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" /> <meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1998, 2006" /> <meta name="DC.Format" content="XHTML" /> <meta name="DC.Identifier" content="conEnvironment" /> <meta name="DC.Language" content="en-us" /> <!-- All rights reserved. Licensed Materials Property of IBM --> <!-- US Government Users Restricted Rights --> <!-- Use, duplication or disclosure restricted by --> <!-- GSA ADP Schedule Contract with IBM Corp. --> <link rel="stylesheet" type="text/css" href="./ibmdita.css" /> <link rel="stylesheet" type="text/css" href="./ic.css" /> <title> API environments</title> </head> <body id="conEnvironment"><a name="conEnvironment"><!-- --></a> <!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script> <h1 class="topictitle1"> API environments</h1> <div><p>This topic introduces the operating environments that <span class="keyword">i5/OS™</span> APIs exist on a system.</p> <p><span class="keyword">i5/OS</span> APIs exist in several operating environments on a system.</p> </div> <div> <ul class="ullinks"> <li class="ulchildlink"><strong><a href="opmOverview.htm">APIs for the Original Program Model environment</a></strong><br /> This topic describes the naming conventions of Original Program Model (OPM) APIs, the initial APIs on the system.</li> <li class="ulchildlink"><strong><a href="ileOverview.htm">APIs for the Integrated Language Environment</a></strong><br /> The Integrated Language Environment<sup>®</sup> (ILE) model is a set of tools and associated system support designed to enhance program development on a system.</li> <li class="ulchildlink"><strong><a href="ileCEE.htm">APIs for the ILE Common Execution Environment</a></strong><br /> The ILE APIs with names beginning with CEE are based on the SAA<sup>®</sup> language environment specifications. These APIs are intended to be consistent across the IBM<sup>®</sup> systems. CEE APIs with names beginning with CEE4 or CEES4 are specific to business computing systems.</li> <li class="ulchildlink"><strong><a href="opmIlecompare.htm">OPM and ILE API differences</a></strong><br /> This topic gives an overview of how Original Program Model (OPM) APIs and Integrated Language Environment<sup>®</sup> (ILE) APIs differ from each other. The ILE APIs include the UNIX-type APIs and the ILE CEE APIs, among others.</li> <li class="ulchildlink"><strong><a href="unixType.htm">APIs for the UNIX-type environment</a></strong><br /> The interfaces provided by sockets, the integrated file system, and other categories are part of a continuing emphasis on supporting an open environment on the system.</li> </ul> <div class="familylinks"> <div class="parentlink"><strong>Parent topic:</strong> <a href="concept.htm" title="Describes the underlying concepts that you need to understand to work effectively with APIs. Among the concepts covered are basic concepts, programming considerations, and terminology.">API concepts</a></div> </div> </div> </body> </html>