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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 style="line-height:17pt" align="left"><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"><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>
<a href="ac2k0701.htm">數據的類型和屬性</a></span></font><font color="#0000CC"><span class="p1"><span class="p1">
</span><br>
</span></font><span class="p1"><font color="#0000CC"><img src="img/small.gif" width="12" height="12"></font>
定義表之間的關系</span></p>
<p style="line-height:17pt" align="left"><span class="p1"><font color="#0000CC"><span class="p1"> <span class="p1"> <a href="ac2k0801.htm">“關系”
簡介</a><br>
<a href="ac2k0802.htm">表之間的三種關系</a><br>
<a href="ac2k0803.htm">怎樣在表之間建立關系</a><br>
<a href="ac2k0804.htm">“關系”與“子表”</a><br>
補充內容</span></span></font><br>
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<font color="#0000CC"><img src="img/small.gif" width="12" height="12"></font>
<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>
</a><font color="#0000CC"><img src="img/small.gif" width="12" height="12"></font>
<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>
<span class="p1"><font color="#0000CC"><img src="img/small.gif" width="12" height="12"></font>
<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"><span style="line-height:17pt">實施參照完整性
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<p class=p2><span style="line-height:17pt"> 在我們建立表之間的關系時，窗口上有一個復選框“實施參照完整性”，單擊它之后，“級聯更新相關字段”和“級聯刪除相關字段”兩個復選框就可以用了。</span></p>
<p class=p2><span style="line-height:17pt"> 如果選定“級聯更新相關字段”復選框，則當更新父行（一對一、一對多關系中“左”表中的相關行）時，Access就會自動更新子行（一對一、一對多關系中的“右”表中的相關行），選定“級聯刪除相關字段”后，當刪除父行時，子行也會跟著被刪除。而且當選擇“實施參照完整性”后，在原來折線的兩端會出現“1”或“OO”符號，在一對一關系中“1”符號在折線靠近兩個表端都會出現，而當一對多關系時“OO”符號則會出現在關系中的右表對應折線的一端上。</span></p>
<p class=p2><span style="line-height:17pt"> 設置了實施參照完整性就可以使我們在表中修改了一個記錄的時候，不會影響到查詢的操作。特別是在有很多表，而且各個表之間都有關系聯接時，“實施參照完整性”會帶來更多的方便。</span></p>
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