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NetBeans6.1入門教程 數據庫的基本操作

開發 后端
本文為您介紹NetBeans6.1 入門教程中的數據庫的基本操作,這里將通過圖片的形式,為大家提供Netbeans 6.1鏈接數據庫等基本操作。

通過NetBeans6.1向導建立和使用數據庫

***步:選擇服務視圖,然后展開DataBase(數據庫節點),右鍵點擊JavaDB

啟動服務器,

啟動服務器 

創建數據庫 

填寫數據庫名稱

建立完畢

 

第二種(重新創建表)抓取表結構實現數據庫的重用

在講如何創建表之前,先講講如何在已有表的情況下如何抓取表的結構(即創建表的SQL語句)

如何抓取表的結構src="https://s5.51cto.com/oss/202207/19/a4e9fdf872a681ea3ae0992cf8024083c3ecbd.jpg" width=386 height=289> </P>
<P>填寫好要保存的數據表結構名字,最后點擊保存。</P>
<P>這樣可以重復的利用已經寫好的創建數據庫表的SQL語句,以后要用到類似的表達餓時候就可以將其拿來修改,或者完全不修改的使用它來創建數據庫。下面是截圖:</P>
<P align=center><IMG border=0 alt=創建數據庫 src="https://s3.51cto.com/oss/202207/19/91d1ea14324d1bb1f5a9853d4ec01496227792.jpg" width=500 height=287> </P>
<P>選擇“重新創建表” 在彈出的對話框中找到數據庫表的結構文件,也就是剛才我們保存的文件。選擇以后點擊打開按鈕。</P>
<P align=center> </P>
<P align=center><IMG border=0 alt=重新創建表 src="https://s3.51cto.com/oss/202207/19/f1ec2c49171190774779564125e11940c708f3.jpg" width=451 height=287></P>
<P align=center> <IMG border=0 alt=命名表 src="https://s6.51cto.com/oss/202207/19/b53408d14ea7752834e682dae098ec3b515d24.jpg" width=480 height=384> </P>
<P align=center><IMG border=0 alt=SQL src="https://s3.51cto.com/oss/202207/19/173d838759f6d37a08b01841923e98dcd07ce1.jpg" width=480 height=379 處于可編輯狀態> </P>
<P>對于截圖中的SQL 語句還需要修改一下,因為使用的是JavaDB 數據庫,SQL 語句有點問題,對NEWSID 字段設置自動增長應該是</P><PRE><OL class=dp-xml><li id="owocgsc"    class=alt><SPAN><SPAN>newsid int not null GENERATED BY DEFAULT AS IDENTITY, </SPAN></SPAN></LI></OL></PRE>
<P>最終的SQL 語句如下:</P><PRE><OL class=dp-sql><li id="owocgsc"    class=alt><SPAN><span id="owocgsc"    class=keyword>create</SPAN><SPAN> </SPAN><span id="owocgsc"    class=keyword>table</SPAN><SPAN> NEWS  </SPAN></SPAN><LI><SPAN>(  </SPAN><li id="owocgsc"    class=alt><SPAN>NEWSID </SPAN><span id="owocgsc"    class=keyword>INTEGER</SPAN><SPAN> GENERATED </SPAN><span id="owocgsc"    class=keyword>BY</SPAN><SPAN> </SPAN><span id="owocgsc"    class=keyword>DEFAULT</SPAN><SPAN> </SPAN><span id="owocgsc"    class=keyword>AS</SPAN><SPAN> IDENTITY </SPAN><span id="owocgsc"    class=op>not</SPAN><SPAN> </SPAN><span id="owocgsc"    class=op>null</SPAN><SPAN> </SPAN><span id="owocgsc"    class=keyword>primary</SPAN><SPAN> </SPAN><span id="owocgsc"    class=keyword>key</SPAN><SPAN>,  </SPAN></SPAN><LI><SPAN>NEWSTITLE </SPAN><span id="owocgsc"    class=keyword>VARCHAR</SPAN><SPAN>(50) </SPAN><span id="owocgsc"    class=op>not</SPAN><SPAN> </SPAN><span id="owocgsc"    class=op>null</SPAN><SPAN>,  </SPAN></SPAN><li id="owocgsc"    class=alt><SPAN>NEWSCONTENT </SPAN><span id="owocgsc"    class=keyword>VARCHAR</SPAN><SPAN>(200) </SPAN><span id="owocgsc"    class=op>not</SPAN><SPAN> </SPAN><span id="owocgsc"    class=op>null</SPAN><SPAN>,  </SPAN></SPAN><LI><SPAN>NEWSDATE </SPAN><span id="owocgsc"    class=keyword>TIMESTAMP</SPAN><SPAN> </SPAN><span id="owocgsc"    class=keyword>default</SPAN><SPAN> </SPAN><span id="owocgsc"    class=func>CURRENT_TIMESTAMP</SPAN><SPAN> </SPAN><span id="owocgsc"    class=op>not</SPAN><SPAN> </SPAN><span id="owocgsc"    class=op>null</SPAN><SPAN>,  </SPAN></SPAN><li id="owocgsc"    class=alt><SPAN>NEWSCOUNT </SPAN><span id="owocgsc"    class=keyword>INTEGER</SPAN><SPAN> </SPAN></SPAN><LI><SPAN>) </SPAN></LI></OL></PRE>
<P>執行完以后就可以看到左邊的視圖中就多了NEWS這張表</P>
<P align=center><IMG border=0 alt=執行完畢 src="https://s8.51cto.com/oss/202207/19/333035169f9b517ac60530d73a2ef3a1e9d24f.jpg" width=335 height=265> </P>
<P>輸出窗口中顯示:</P>
<P align=center><IMG border=0 alt=輸出窗口顯示 src="https://s9.51cto.com/oss/202207/19/14dc62581962666ecee3704befee7bc398ba35.jpg" width=297 height=168> </P>
<P>呵呵,右鍵點擊“表”選擇“刷新” ,</P>
<P align=center><IMG border=0 alt=刷新完畢 src="https://s2.51cto.com/oss/202207/19/58dd56d28f9d65f5ac3460690d5b4a5abe8a43.jpg" width=301 height=245></P>
<P></P>
<P> </P>
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</div> <div   id="owocgsc"   class="article-bottom"><span>責任編輯:張燕妮</span> <span>
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