Oracle 11G OCP 1Z0-052 24

（24）Which two statements correctly describe the relation between a data file and the logical database structures? (Choose two.)

A. An extent cannot spread across data files.

B. A segment cannot spread across data files.

C. A data file can belong to only one tablespace.

D. A data file can have only one segment created in it.

E. A data block can spread across multiple data files as it can consist of multiple operating system (OS) blocks.

答案：（A、C）

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