問題文
A tablespace is being created and the team has to settle how the extents inside it will be sized. Which statement about the two ways of settling that is correct?
選択肢
- Letting the database pick the size suits an object whose extents will differ in size, while asking for one size throughout is available only for a tablespace that holds temporary segments, so a permanent tablespace has just the one way open to it.
- Letting the database pick the size is worked out afresh at each extent from the growth that the object has shown so far, while asking for one size throughout fixes the size at the moment each object is created rather than when the tablespace is created.
- Letting the database pick the size suits a case that can be read in advance and leaves no room that cannot be used, while asking for one size throughout suits an object whose extents will differ in size and whose growth cannot be read in advance by anybody at all.
- Letting the database pick the size suits an object whose extents will differ in size and whose growth cannot be read in advance, while asking for one size throughout suits a case that can be read in advance and leaves no room that cannot be used.