单项选择题
In which situation is shredding XML data recommended?（）
A.When the data is naturally tabular B.When the number of nodes are volatile C.When the data by nature has sparse attributes D.When the data is of low volume and requires a complex star-schema topology
单项选择题 Which of the following is a typical data warehouse query?（）
单项选择题 Which of the following tools is used to view historical information about tasks, database changes, messages, and notifications?（）
单项选择题 Which of the following describes the model used by the Geodetic Extender?（）
