单项选择题
Which of the following tools is used to view historical information about tasks, database changes, messages, and notifications?（）
A.Journal B.Task Center C.Control Center D.Activity Monitor
单项选择题 Which of the following describes the model used by the Geodetic Extender?（）
单项选择题 Which of the following best describes the age of the data in an OLTP system?（）
单项选择题 Which of the following is the lowest cost DB2 product that can be legally installed on an AIX server?（）
