Which two statements are true about the database buffer cache?

Which two statements are true about the database buffer cache? (Choose two.)

Which two statements are true about the database buffer cache? (Choose two.)

A.
A buffer can be written to by many processes at the same time.

B.
A buffer containing a block that is identical to the block on disk is called free buffer.

C.
A buffer containing a block that is being accessed by a process is called dirty buffer.

D.
A buffer available to be overwritten with a different database block at any time is called a dirty buffer.

E.
A buffer can contain a different version of a block that is available in a different buffer of the same cache.



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