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Title: Installation
<H3><A name="Installation-SystemRequirements"></A>System Requirements</H3>
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<LI><B>JDK:</B> Cayenne, including GUI tools, is written in 100% Java, and runs on any Java-compatible platform. Required JDK version is 1.4 or higher. If your deployment environment uses JDK 1.3, you can still use Cayenne, just downgrade to version 1.1.x - the last version compatible with JDK 1.3.</LI>
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<LI><B>JDBC Driver:</B> You will need a JDBC driver to access the database. Information about various drivers and database-specific configuration is provided on the <A href="http://objectstyle.org/confluence/display/CAY/Database%20Support" class="external-link" rel="nofollow">Database Support</A> page.</LI>
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<LI><B>Third-party Libraries:</B> Depending on the application nature, Cayenne may optionally require a few third-party open source packages. See <A href="jar-files-and-dependencies.html" title="JAR Files and Dependencies">JAR Files and Dependencies</A> page for details.</LI>
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<H3><A name="Installation-ObtainingCayenne"></A>Obtaining Cayenne</H3>
<P>Installing Cayenne is simple - just download and unpack the distribution. Download page is located here: <A href="http://objectstyle.org/cayenne/download.html" class="external-link" rel="nofollow">http://objectstyle.org/cayenne/download.html</A>. Select a distribution matching your target platform (cross-platform version, as the name implies, works on any OS that has Java).</P>
<P>Once you've done that, you can <A href="running-cayennemodeler.html" title="Running CayenneModeler">start the Modeler</A> and use <TT>cayenne.jar</TT> file in your applications (see <A href="jar-files-and-dependencies.html" title="JAR Files and Dependencies">JAR Files and Dependencies</A> for more information).</P>