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單項選擇題

An online tablespace,TEST_TBS,is full and you realize that no server-managed tablespace threshold alerts were generated for the TEST_TBS tablespace. 
What could be the reason,if the TEST_TBS tablespace does not include autoextensible data files?()  

A. TEST_TBS is a small file tablespace.
B. TEST_TBS is a bigfile tablespace (BFT).
C. TEST_TBS is the default temporary tablespace.
D. TEST_TBS is a dictionary-managed tablespace.

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