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多选题
Which two statements correctly describe the relation between a data file and the logical database structures（）
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
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更多 “多选题Which two statements correctly describe the relation between a data file and the logical database structures（）AAn extent cannot spread across data files.BA segment cannot spread across data files.CA data file can belong to only one tablespace.DA data file can have only one segment created in it.EA data block can spread across multiple data files as it can consist of multiple operating system （OS）blocks” 相关考题
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单选题Which of the following best describes the relation between night and knight?A
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