试题详情
- 多项选择题Which statements are true about logical structures of the Oracle database（）
A、Each segment contains one or more extents.
B、Multiple tablespaces can share a single data file
C、A data block is the smallest unit of input/output （I/O） in data files.
D、It is possible to have tablespaces of different block sizes in a database.
E、Each data block in the database always corresponds to one operating system block
- A,C,D
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