OCP认证052考试最新题库及答案整理-40

40、 Which is true about logical and physical database structures? (Choose the best answer) A. An undo tablespace has a temp file instead of a data file. B. A segment can consist of extents of different sizes. C. A permanent tablespace can only contain tables segments and index segments. D. A tablespace can consist of data blocks of different sizes. E. An extent always consists of physically contiguous data blocks in storage. Correct Answer: B 北京CUUG整理，转载请注明，OCP讨论群：569933648/836361015