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<td width="90%"><font size="4" face="Verdana, Arial, Helvetica"><b>代碼樣本和安裝需求</b></font></td><td width="200" align="right"><font size="1" face="Verdana, Arial, Helvetica"><nobr>   第 3 頁（共5 頁）</nobr></font></td>
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<p>JDO 可以與 Java 2 平臺，標準版平臺結合使用。從 Sun Microsystems 上下載的 JDO 的確帶有參考實現，但編寫本教程時，該參考實現還被認為是不可靠的。其工具不夠健壯，還不能用于一般用途。</p>
<p>在 LIBeLIS 上可以免費獲得一個更可靠的 JDO 實現（用于教育目的，需注冊）。
本教程中的練習都基于 LIBeLIS JDO 實現。除了 JDO 實現外，您還需要 JDBC 驅動程序和關系數據庫來完成練習。除了 JDO 實現外，練習使用的所有工具都是開放源碼。</p>
<p>需要下列技術和資源以完成本教程中的練習：</p>
<ul>
<li>
<a href="http://www.libelis.com">LIBeLIS 社區版 JDO</a>（LiDO）。下載時需進行站點注冊。</li>
<li>
<a href="http://java.sun.com/j2se/">Java 2 平臺，標準版。</a>
</li>
<li>用于編譯和運行示例的標準編輯器和 JDK。</li>
<li>
<a href="http://www.mysql.org">MySQL</a> 開放源碼關系數據庫。</li>
<li>用于 MySQL 的 <a href="http://mmmysql.sourceforge.net/">MM.MySQL</a> 開放源碼 JDBC 驅動程序。</li>
<li>示例的<binref href="jdo-source.zip"></binref>二進制文件和源代碼。</li>
</ul>
<p>請參閱<a href="j-jdo-6-3.html">參考資料</a>獲取以上各項技術和資源的更多詳細信息，以及指向附加信息的鏈接。</p>
<p>隨著我們對教程的深入，您會了解有關 LiDO 的相當多的信息，因此不必預先了解 JDO 實現。對 MySQL 也是如此，因為 LiDO 將為您處理使用數據庫的大多數細節。不過，您需要完成 MySQL 的安裝過程，并了解如何創建和刪除數據庫。一旦在 CLASSPATH 中設置 MM.MySQL 和 JDBC 驅動程序之后，您不必執行任何維護工作和特定于 MM.MySQL 的任務。</p>
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