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<div class=Section1>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>●试题二<span
lang=EN-US><o:p></o:p></span></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>阅读以下说明，回答问题，将解答写在试卷的对应栏内。<span
lang=EN-US><o:p></o:p></span></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>【说明】<span
lang=EN-US><o:p></o:p></span></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>某公司要开发一个销售管理系统，该系统的主要功能是：处理客户和销售员送来的订单；工厂是根据订货安排生产的，交出货物同时开出发票，收到客户付款后，根据发票存根进行应收款处理。每张订单由订单号，若干头信息和订单细节组成。一张订单可定购多种产品，工厂对大宗订货给予优惠。每种产品都规定了不同订货数量的折扣。<span
lang=EN-US><o:p></o:p></span></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>根据上述要求公司的销售部王经理写下了以下数据表结构：<span
lang=EN-US><o:p></o:p></span></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>客户：</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>(</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>客户号，客户名，地址，电话</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>)<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>订单：</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>(</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>订单号，客户号，产品号，订货数，订货日期，交货日期，金额</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>)<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>应收账款：</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>(</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>客户号，订单号，发票号，应收金额，支付日期，支付金额，当前余额</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>)<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>产品描述：</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>(</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>产品号，产品名，单价，重量</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>)<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>折扣规则：</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>(</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>产品号，订货量，折扣</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>)<o:p></o:p></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>【问题</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>1</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>】<span
lang=EN-US><o:p></o:p></span></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>上表中带下划线的为主码。请为还没有确定主码或是主码不合理的数据表选定最合适的主码。<span
lang=EN-US><o:p></o:p></span></span></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>【问题</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>2</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-hansi-font-family:"Times New Roman"'>】<span
lang=EN-US><o:p></o:p></span></span></p>
<p class=MsoNormal align=left style='text-align:left;mso-layout-grid-align:
none;text-autospace:none'><span style='mso-bidi-font-size:10.5pt;font-family:
宋体;mso-hansi-font-family:"Times New Roman"'>上面的关系模式中还有不是第二范式的，请将其转为第二范式。并确定新数据表的主码。</span><span
style='font-size:8.5pt;font-family:"MS Sans Serif";mso-font-kerning:0pt;
mso-ansi-language:ZH-CN'><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></p>
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