【填空题】删除数据库数据文件“Test1dat1”的命令是 ALTER DATABASE 学生管理_备份（） FILE　Test1dat1

A.alter database bookdb delete file book2

B.alter database bookdb drop file book2

C.alter database bookdb remove file book2

D.alter database bookdb modify file book2

A.alter database bookdb delete file book2

B.alter database bookdb drop file book2

C.alter database bookdb remove file book2

D.alter database bookdb modify file book2

A.ALTER DATABASE book REMOVE FILE bookdat

B.ALTER DATABASE book MODIFY FILE bookdat2

C.ALTER DATABASE book DELETE FILE bookdat2

D.ALTER DATABASE book DROP FILE bookdat2

A.ALTER DATABASE 学生选课 ADD FILE (NAME ='学生选课2', FILENAME = 'D:DATA学生选课2.NDF', SIZE=20MB, MAXSIZE=1GB, FILEGROWTH=10MB )

B.ALTER table 学生选课 ADD FILE (NAME ='学生选课2', FILENAME = 'D:DATA学生选课2.NDF', SIZE=20MB, MAXSIZE=1GB, FILEGROWTH=10MB )

C.ALTER view 学生选课 ADD FILE (NAME ='学生选课2', FILENAME = 'D:DATA学生选课2.NDF', SIZE=20MB, MAXSIZE=1GB, FILEGROWTH=10MB )

D.ALTER view 学生选课 ADD log FILE (NAME ='学生选课2', FILENAME = 'D:DATA学生选课2.N

A.能还原全部数据，并可以将数据库恢复到任意指定的时刻

B.只能将数据恢复到数据文件备份的时刻

C.备份时只要备份数据库的数据文件

D.不支持即时点恢复

A.modify file

B.add file

C.remove file

D.alter file

A.modify file

B.add file

C.remove file

D.alter file