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在一个事物中update一张大表,但是数据库服务器由于断电的原因需要重启,引起实例关闭,在这种情况下下面那种描述不正确?()
A.在线日志和归档日志文件都需要用于数据库恢复
B.没有提交的事物在下次打开数据库时被提交
C.下次打开数据库时没有提交的事物被自动回滚
D.dba需要恢复没有提交的事物
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A.在线日志和归档日志文件都需要用于数据库恢复
B.没有提交的事物在下次打开数据库时被提交
C.下次打开数据库时没有提交的事物被自动回滚
D.dba需要恢复没有提交的事物
A.ROWSHARE是表级锁
B.一个会话对表加了SHARE锁,别的会话不能对该表加SHARE锁
C.一个会话对表加了SHARE锁,别的会话不能对该表进行修改
D.使用UPDATE语句修改记录,系统一定会添加ROWSHARE锁
代表一个前来公司咨询的人的情况。请你根据每个人的情况,在A到H的课程中为他们选择最适合的一门。并把课程的代号(从A到H)写在答题卡相应的位置上。
MERTON TRAINNING
SHORT RESIDENTIAL COURSES
A.Advanced Presentation Skills
B.Better Time Management
C.Essential Team-Building in the Office
D.Updating your Selling Skills
E.Making the Most of Computers
F.Improve your Confidence in Meetings.
G.Successful Telephoning
H.Developing your Understanding of Accounts
66.An office manager needs to become more efficient(高效的) in order to meet deadlines at work.()
67.A member of staff has to make several calls a day but is not confident when ringing strangers.()
68.The Information Technology Manager wants to improve the speech she has prepared for a conference next month.()
69.An experienced sales executive needs to update his knowledge of finance before he starts work as Assistant Sales Manger.()
70.A new member of the team needs to learn how to use the office software more efficiently.()
A.构成文章的各个局部应该结合成一个完美统一的整体
B.构成文章整体的各个局部要相对齐备,不可无故残缺
C.各个部分在文章结构中所占的地位要适当
D.结构实质上是作者主观思路和事物客观逻辑性相结合的产物
E.结构一定要反映客观事物固有的联系和秩序,但又决不是对其存在和发展的原始形态的照抄或简单复制
A.JPEG
B.TIFF
C.GIF
D.PNG
A.UPDATE职工SET工资=工资+10性别="女"
B.UPDATE职工SET工资=工资+10And性别="女"
C.UPDATE职工SET工资=10WHERE性别="女"
D.UPDATE职工SET工资=工资+10WHERE性别="女"
A. DELETE Age from S
B. ALTER TABLE S DROP Age
C. UPDATE S Age
D. ALTER TABLE S ‘Age’
A.Update商品表单价=单价0.9
B.Update商品表Set单价With单价0.9
C.Update商品表Set单价=单价0.9
D.Update商品表where单价=单价0.9