sox is An AltErnAtivE {{u}} (71) {{/u}} For xml. it is usEFul For rEADing AnD CrEAting xml ContEnt in A {{u}} (72) {{/u}} EDitor. it is thEn EAsily trAnsFormED into propEr xml. sox wAs CrEAtED BECAusE DEvElopErs CAn spEnD A grEAt DEAl oF timE with rAw xml. For mAny oF us, thE populAr xml {{u}} (73) {{/u}} hAvE not rEAChED A point whErE thEir trEE viEws, tABlEs AnD Forms CAn ComplEtEly suBstitutE第2题： 某商场的部门、员工和商品3个实体之间的关系如图5-7所示。假设每个部门有若干名员工，每种商品只能由一个部门负责销售。如果用户要求得到如表5-7所示的结果，则需要{{u}} (52) {{/u}}，并增加关系模式{{u}} (53) {{/u}}。如果要求查询某部门负责销售的商品，则需要{{u}} (54) {{/u}}。
![]() {{B}}表5-4 部门信息表 表5-5 商品信息表{{/B}}
答案解析与讨论：点击查看第3题： 己知3个类o、p和q，类o中定义了一个私有方法F1、一个公有方法F2和一个受保护的方法F3；类p和类q是类o的派生类，其继承方式如下所示。
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关于方法F1的描述中正确的是{{u}} (41) {{/u}}；关于方法F2的描述中正确的是{{u}} (42) {{/u}}；关于方法F3的描述中正确的是{{u}} (43) {{/u}}。 |
A．类o、p和q的对象都可以访问方法F2
B、类p和q的对象都可以访问方法F2
C．类o和q的对象都可以访问方法F2
D．只有在类p内才能访问方法F2
第4题： sox is An AltErnAtivE {{u}} (71) {{/u}} For xml. it is usEFul For rEADing AnD CrEAting xml ContEnt in A {{u}} (72) {{/u}} EDitor. it is thEn EAsily trAnsFormED into propEr xml. sox wAs CrEAtED BECAusE DEvElopErs CAn spEnD A grEAt DEAl oF timE with rAw xml. For mAny oF us, thE populAr xml {{u}} (73) {{/u}} hAvE not rEAChED A point whErE thEir trEE viEws, tABlEs AnD Forms CAn ComplEtEly suBstitutE第5题： 某商场的部门、员工和商品3个实体之间的关系如图5-7所示。假设每个部门有若干名员工，每种商品只能由一个部门负责销售。如果用户要求得到如表5-7所示的结果，则需要{{u}} (52) {{/u}}，并增加关系模式{{u}} (53) {{/u}}。如果要求查询某部门负责销售的商品，则需要{{u}} (54) {{/u}}。
![]() {{B}}表5-4 部门信息表 表5-5 商品信息表{{/B}}
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