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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.
Answer: AC
答案解析：
从下图可以看出，一个数据文件只能属于一个表空间。而数据文件和extent也是一对一的，即是说数据文件不能夸区，但可以夸段。
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