单项选择题
Which tool must be used to analyze all of the database operations performed by an application against a DB2 for i5/OS database?（）
A.Visual Explain B.Activity Monitor C.SQL Performance Monitor D.DB2 Performance Monitor
单项选择题 Which of the following is NOT true about XML columns?（）
单项选择题 Which of the following describes how DB2 9 stores an XML document if the XML Extender is not used?（）
单项选择题 For which of the following is a data warehouse optimized?（）
