单项选择题 Which of the following tools can make recommendations for indexes and/or MQTs to improve the performance of DB2 applications?（）

单项选择题 Which product must be installed on z/OS to allow a COBOL program running on that machine to access data on a remote DB2 for z/OS server?（）

单项选择题 A trigger can be created on which of the following objects?（）