55、Which is true when a database instance is shut down?
A. IMMEIATE, TRANSACTIONAL, and NORMAL modes wait for all uncommitted transactions either to commit or rollback and then close the database
B. IMMEIATE, TRANSACTIONAL, and NORMAL modes all result in a checkpoint
C. Only TRANSACTIONAL, and NORMAL modes wait for all uncommitted transactions to commit or rollback and then close the database
D. Neither the IMMEDIATE nor the ABORT mode rolls back uncommitted transactions.
Correct Answer: B
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