【单选题】Dennis gave up smoking two years ago.But he_____40 cigarettes a day.
【简答题】建立索引的目的是( )。 A降低SQL Server数据检索的速度 B与SQL Server数据检索的速度无关 C加快数据库的打开速度 D提高SQL Server数据检索的速度
【简答题】Conversation T w o 6. A. the United States B. The United Kingdom C. 14 developing countries D. 40 developing countries 7. A. Half the man and 11 percent of the women. B. 60% of the man and 22 percent...
【多选题】SQL Server提供了如下哪些创建索引的方法?(多选)
B.
利用Transact-SQL语句中的CREATE INDEX命令创建索引
C.
创建表的PRIMARY KEY约束时自动创建索引。
【简答题】在SQL Server 2000中可创建3种类型的索引,即惟一性索引、( )和聚集索引。
【判断题】PPBB 报文所编的是 100hpa 以上的规定高度层风的资料。( )
【单选题】砂秒浆试块(评定强度等级用)的标准尺寸为( )cm
【简答题】2 You should spend about 40 minutes on this task. Write about the following topic: Smoking not only harms the smoker, but also those who are nearby. Therefore, smoking should be banned in public place...