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下列SQL语句中,包含了不正确定义语句的组是( )。Ⅰ. CREATE TABLE CREATE VIEW CREATE INDEXⅡ. DROP TABLE DROP VIEW DROP INDEXⅢ. ALTER TABLE ALTER VIEW ALTER INDEXA)只有IB)只有ⅡC)
在SQL中,视图(view)是三级模式结构中的( )。A)内模式B)模式C)外模式D)存储模式
(23 )为了提高查询速度,则 DBA 应创建相应的A )视图( View )B )索引( Index )C) 游标( Cursor )D) 基本表( Table )
( 22 )如果只允许学生查看自己所选课程的信息和分数,则 DBA 应创建相应的A )视图( View )B )索引( Index )C) 游标( Cursor )D )基本表( Table )
CeDt Portfolio View模型是对什么关系进行建模?( )A.转移概率与宏观因素的关系B.转移概率与企业自身风险的关系C.转移概率与行业因素的关系D.以上都不对
(b) Explain the advantages from a tax point of view of operating the new business as a partnership rather thanas a company whilst it is making losses
(c) Critically evaluate Vincent Viola’s view that corporate governance provisions should vary by country.(8 marks)
(b) Discuss the view that fair value is a more relevant measure to use in corporate reporting than historical cost.(12 marks)
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