单项选择题
A.Size of typical transactions
B.Concurrent transactions
C.Size of rows in table most frequently changed
D.Number of anticipated disk sorts
单项选择题 Youaretryingtodeterminehowmanydisksortsarehappeningonthedatabaserightnow.Whichofthefollowingdictionarytableswouldyouusetofindthatinformation?（）
单项选择题 Todeterminethespaceallocatedfortemporarysegments,theDBAcanaccesswhichofthefollowingviews?（）
单项选择题 Bydefault,checkpointshappenatleastasoftenas（）.