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<br> <table width="145" border="0" cellspacing="0" cellpadding="0" bordercolor="#F8AC0E" align="center" height="20"> <tr bgcolor="000099" valign="middle"> <td width="109" align="center" class="p2"><font color="#FFFFFF"><b>Access 2000</b></font><font color="#FF3333" ><b></b></font></td> <td height="20" bgcolor="#E8E8E8" width="13"><img src="/pc/img/title_00.gif" width="13" height="20"></td> <td height="20" bgcolor="#E8E8E8" width="23"> </td> </tr> </table>
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<a href="ac2k0101.htm">初識(shí)Access 2000<br>
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<a href="ac2k0201.htm">窗口接口使用簡(jiǎn)介<br>
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<a href="ac2k0301.htm">用向?qū)Ы?shù)據(jù)庫(kù)</a></span></font><font color="#0000CC"><span class="p1"><a href="ac2k0301.htm">
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<a href="ac2k0601.htm">在表中輸入數(shù)據(jù)</a> <a href="ac2k0601.htm"><br>
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<a href="ac2k0701.htm">數(shù)據(jù)的類(lèi)型和屬性</a><span class="p1"> </span><br>
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<a href="ac2k1301.htm">為WEB頁(yè)提供數(shù)據(jù)</a></span><span class="p1"> <br>
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<span class="p1"><a href="ac2k1601.htm">模塊與“VBA”語(yǔ)言</a></span><a href="ac2k1601.htm"><span class="p1">
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<span class="p1"><a href="ac2k1701.htm">SQL語(yǔ)言妙用</a></span> <br>
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<span class="p1"><a href="ac2k1801.htm">外部數(shù)據(jù)的使用</a></span> <br>
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<span class="p1">數(shù)據(jù)的優(yōu)化和安全</span></p>
<p class="p1" style="line-height:17pt" align="left"> <a href="ac2k1901.htm">對(duì)表進(jìn)行分析和優(yōu)化</a><br>
對(duì)數(shù)據(jù)庫(kù)性能分析<br>
<a href="ac2k1903.htm">安全管理</a><br>
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<a href="ac2k2001.htm"><span class="p1">容易忽略的工作</span></a></p>
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怎樣對(duì)數(shù)據(jù)庫(kù)的性能進(jìn)行分析 </span></b></font></p>
<p align="right"> </p>
<p align="left"> <span style="line-height:17pt"> 剛才我們對(duì)表進(jìn)行了分析,看見(jiàn)在菜單上分析這個(gè)選項(xiàng)下還有“性能”和“文檔管理器”兩個(gè)選項(xiàng),下面就講講這兩個(gè)選項(xiàng)。<br>
首先單擊“工具”菜單中的“分析”項(xiàng),選擇“性能”命令。現(xiàn)在我們就開(kāi)始對(duì)整個(gè)數(shù)據(jù)庫(kù)進(jìn)行性能分析了。為了使用的方便,我們常常選擇“全部對(duì)象類(lèi)型”選項(xiàng),</span></p>
<p align="center"><img src="img/ac2k1901.gif" width="400" height="198" alt="性能分析器"></p>
<p align="left"><span style="line-height:17pt"> 并且單擊這個(gè)選項(xiàng)卡上的“全部選定”按鈕,這樣雖然會(huì)使我們多花一些時(shí)間進(jìn)行性能分析,但卻是非常值得的。完成這些后,單擊這個(gè)選項(xiàng)卡上的“確定”按鈕,現(xiàn)在ACCESS就開(kāi)始為我們的數(shù)據(jù)庫(kù)進(jìn)行優(yōu)化分析了。<br>
分析結(jié)果出來(lái)了,</span></p>
<p align="center"><img src="img/ac2k1902.gif" width="450" height="301" alt="分析結(jié)果列表"></p>
<p align="left"><span style="line-height:17pt"> 列表中每一項(xiàng)前面都有一個(gè)符號(hào),每個(gè)符號(hào)都代表一個(gè)意思,在這個(gè)對(duì)話框中都有介紹,現(xiàn)在如果在列表框中有“推薦”和“建議”,我們就將鼠標(biāo)移動(dòng)到“全部選定”按鈕上,單擊鼠標(biāo)左鍵,這時(shí)在列表框中的每個(gè)選項(xiàng)都被選中了。<br>
完成這些以后,將鼠標(biāo)移動(dòng)到按鈕“優(yōu)化”上,單擊鼠標(biāo)左鍵,等一會(huì)兒,我們會(huì)發(fā)現(xiàn)原來(lái)的“推薦”和“建議”項(xiàng)都變成了“更正”項(xiàng),說(shuō)明我們已經(jīng)將這些問(wèn)題都解決了。
</span></p>
<p align="center"><img src="img/ac2k1903.gif" width="468" height="118" alt="優(yōu)化后的結(jié)果列表"></p>
<p align="left"><span style="line-height:17pt"> 帶“燈泡”符號(hào)的“主意”項(xiàng)沒(méi)有變化。當(dāng)我們選中其中一個(gè)“主意”選項(xiàng)時(shí),就會(huì)發(fā)現(xiàn)在這個(gè)對(duì)話框中的“分析注釋”中會(huì)詳細(xì)列出ACCESS為解決這個(gè)問(wèn)題所出的主意,</span></p>
<p align="center"><img src="img/ac2k1904.gif" width="450" height="301" alt="選中“主意”時(shí)的性能分析器窗口"></p>
<p align="left"><span style="line-height:17pt"> 你只要記住這些方法,單擊“關(guān)閉”按鈕,然后一步步按照它提示的方法操作就可以了。
<br>
這個(gè)菜單中的“文檔管理器”選項(xiàng)可以打印出所建數(shù)據(jù)庫(kù)各對(duì)象的全部信息,將鼠標(biāo)移動(dòng)到這個(gè)選項(xiàng)上,單擊鼠標(biāo)左鍵,這時(shí)就會(huì)在屏幕中彈出一個(gè)對(duì)話框,</span></p>
<p align="center"><img src="img/ac2k1905.gif" width="509" height="251" alt="“文檔管理器”對(duì)話框"></p>
<p align="left"><span style="line-height:17pt"> 在這個(gè)對(duì)話框中也有選項(xiàng)卡,我們選中“查詢(xún)”選項(xiàng)卡,然后在相應(yīng)的列表框中選擇需要的對(duì)象名,選好以后,單擊“確定”按鈕就可以將這些選項(xiàng)的各種內(nèi)容顯示出來(lái),你如果需要可以將這些內(nèi)容打印出來(lái)。
<br>
在這個(gè)對(duì)話框上有一個(gè)“選項(xiàng)”按鈕,這個(gè)按鈕是用來(lái)確定打印表的含義,讓我們單擊這個(gè)按鈕,這時(shí)會(huì)彈出一個(gè)對(duì)話框,</span></p>
<p align="center"><img src="img/ac2k1906.gif" width="300" height="297" alt="“打印查詢(xún)定義”對(duì)話框"></p>
<p align="left"><span style="line-height:17pt"> 在這個(gè)對(duì)話框中包含“表含義”、“字段含義”、“索引含義”這三個(gè)含義組,選擇組中不同的選項(xiàng),會(huì)改變打印表,也就是將要顯示的信息的內(nèi)容。當(dāng)我們完成這些工作,單擊“確定”按鈕就可以了。
<br>
有了這些信息,有經(jīng)驗(yàn)的ACCESS使用者就可以從打印出的信息資料上分析出所建立的數(shù)據(jù)庫(kù)有哪些問(wèn)題了。</span> </p>
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