单项选择题
A.An index used to join two bitmap indexes on a table.
B.A bitmap index created for the join of two or more tables.
C.A bitmap index created on the join of two or more indexes.
D.A bitmap index created on the join of two or more indexed-organized tables.
单项选择题 Examine the statement： DROP TABLESPACE IND2 INCLUDING CONTENTS AND DATAFILES； What is the result of the statement？（）
单项选择题 Consider this syntax： MERGE INTO t1 USING t2 ON （join predicate）….. What does the MERGE syntax do？（）
多项选择题 WhichtwodatatypescanbeconvertedtoLOBsusinganALTERTABLE…MODIFYcommand？（）