简答题:在考生文件夹中有一个“Ace2.mdb”数据库。 (1)以“学生”表和“成绩”表为数据源,创建生成表查询 “查询1”,

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题目内容:
在考生文件夹中有一个“Ace2.mdb”数据库。

(1)以“学生”表和“成绩”表为数据源,创建生成表查询
“查询1”,用平均分>80的学生信息生成“优秀学生”表。该表有“学生姓名”、“班级号码”和“平均分”字段,如图2所示。
(2)以“战绩”表为数据源,创建删除查询“查询2”,删除每门课程都低于30的成绩信息。删除后的效果如图3所i;。

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