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<td width="109" align="center" class="p2"><font color="#FFFFFF"><b>Access
2000</b></font><font color="#FF3333" ><b></b></font></td>
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<p><font color="#0000CC"><span class="p1"><span class="p1"> </span></span></font><span class="p1"><font color="#0000CC"><img src="img/small.gif" width="12" height="12">
<a href="ac2k0101.htm">初識Access 2000<br>
</a></font><font color="#0000CC"> </font></span><span class="p1"><font color="#0000CC"><img src="img/small.gif" width="12" height="12">
<a href="ac2k0201.htm">窗口接口使用簡介<br>
</a></font></span><font color="#0000CC"><span class="p1"><font color="#0000CC"><img src="img/small.gif" width="12" height="12"></font>
<a href="ac2k0301.htm">用向導建立數據庫</a></span></font><font color="#0000CC"><span class="p1"><a href="ac2k0301.htm">
<br>
</a><font color="#0000CC"><img src="img/small.gif" width="12" height="12"></font>
<a href="ac2k0401.htm">數據庫的結構</a> <span class="p1"><a href="ac2k0403.htm">
</a></span> <br>
<font color="#0000CC"><img src="img/small.gif" width="12" height="12"></font>
<a href="ac2k0501.htm">用表向導建立表</a></span></font> <font color="#0000CC"><span class="p1">
</span></font><font color="#0000CC"><span class="p1"><a href="ac2k0501.htm">
<br>
</a><font color="#0000CC"><img src="img/small.gif" width="12" height="12"></font>
<a href="ac2k0601.htm">在表中輸入數據</a></span></font><font color="#0000CC"><span class="p1"><a href="ac2k0601.htm"><br>
</a><font color="#0000CC"><img src="img/small.gif" width="12" height="12"></font>
數據的類型和屬性<br>
</span></font></p>
<p style="line-height:17pt" align="left"><font color="#0000CC"><span class="p1"><span class="p1">
<a href="ac2k0701.htm">用表設計器來創建表</a><br>
怎樣為表設置主鍵<br>
<a href="ac2k0703.htm">為字段設置數據類型</a><br>
<a href="ac2k0704.htm">設置字段的屬性（一）</a> <br>
<a href="ac2k0705.htm">設置字段的屬性（二）</a> <br>
<a href="ac2k0706.htm">補充內容</a></span></span></font></p>
<p style="line-height:17pt" align="left"><font color="#0000CC"><span class="p1"><a href="ac2k0701.htm">
</a></span></font><span class="p1"><font color="#0000CC"><img src="img/small.gif" width="12" height="12"></font>
<a href="ac2k0801.htm" class="p1">定義表之間的關系<br>
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<a href="ac2k0901.htm">建立簡單的查詢</a><br>
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<a href="ac2k1001.htm">為查詢制定規則</a><br>
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<a href="ac2k1101.htm">如何建立數據窗體<br>
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<a href="ac2k1201.htm">生成數據打印報表</a><br>
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<a href="ac2k1301.htm">為WEB頁提供數據<br>
</a><font color="#0000CC"><img src="img/small.gif" width="12" height="12"></font>
<a href="ac2k1301.htm"></a></span><a href="ac2k1401.htm" class="p1">用圖表顯示數據</a><br>
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<a href="ac2k1301.htm"></a></span><a href="ac2k1501.htm"><span class="p1">宏的使用</span><br>
</a><span class="p1"><font color="#0000CC"><img src="img/small.gif" width="12" height="12"></font>
<a href="ac2k1301.htm"></a></span><a href="ac2k1601.htm"><span class="p1">模塊與“VBA”語言</span><br>
</a><span class="p1"><font color="#0000CC"><img src="img/small.gif" width="12" height="12"></font>
<a href="ac2k1301.htm"></a></span><a href="ac2k1701.htm"><span class="p1">SQL語言妙用</span><br>
</a><span class="p1"><font color="#0000CC"><img src="img/small.gif" width="12" height="12"></font>
<a href="ac2k1301.htm"></a></span><a href="ac2k1801.htm"><span class="p1">外部數據的使用</span><br>
</a><span class="p1"><font color="#0000CC"><img src="img/small.gif" width="12" height="12"></font>
<a href="ac2k1301.htm"></a></span><a href="ac2k1901.htm"><span class="p1">數據的優化和安全</span><br>
</a><span class="p1"><font color="#0000CC"><img src="img/small.gif" width="12" height="12"></font>
<a href="ac2k1301.htm"></a></span><a href="ac2k2001.htm"><span class="p1">容易忽略的工作</span></a></p>
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<div align="center"><font color="#003333"><b><font color="#FF3333">怎樣為表設置主鍵？</font></b></font></div>
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<p class=p2><span style="line-height:17pt"> 單擊工具欄上的“視圖”按鈕，切換回表的設計視圖，開始為表設置主鍵。第五課的課后補充里曾經說過主鍵是什么。</span></p>
<p class=p2><span style="line-height:17pt"> 設置表的主鍵非常簡單，比如要將“訂單信息表”中的“訂單號”字段作為表的“主鍵”，只要單擊“訂單號”這一行中的任何位置，將這行設為當前行，然后單擊工具欄上的“主鍵”按鈕，按鈕會凹陷進去，在“訂單號”一行最左面的方格中出現了一個“鑰匙”符號，表示“訂單號”這一字段成為表的主鍵了。</span></p>
<p align="center"><img src="img/ac2k0703.gif" width="324" height="116" alt="設置主鍵">
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<p class=p2><span style="line-height:17pt"> 用這種方法設置了新的主鍵以后，原來的主鍵就會消失。如果要將表中的多個字段設置成主鍵，要先把鼠標移動到表最左邊的方格內，當鼠標光標變成一個“向右箭頭”形狀時，單擊鼠標左鍵將這行選定，然后按住鍵盤上的“CTRL”鍵，選定其它要設置成主鍵的行，都選好以后，單擊工具欄上的“主鍵”按鈕，選中的字段都設成“主鍵”了。如果想取消主鍵，先選中字段，然后單擊工具欄上的“主鍵”按鈕，這時字段前面的“鑰匙”圖標就消失了，表示這個字段不再是“主鍵”了。
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