单项选择题
设有关系Students(学号,姓名,年龄,性别,系名,家庭住址),如果要查询姓“李”的且家庭住址包含“科技路”的学生学号、姓名以及所在系,则对应的SELECT 语句如下: SELECT 学号,姓名,系名 FROM Students WHERE (1) AND (2) ;
1()
A.姓名LIKE ’李_ _’ B.姓名LIKE ’李%’ C.姓名AS ’李_ _’ D.姓名AS ’李%’
单项选择题 1()
单项选择题 Most () measures involve data encryption and password.
单项选择题 In () , the only element that can be deleted or removed is the one that was inserted most recently.