9. When the recovery system sees a transaction log containing <__, Start> and <__, Commit> or just <__, Commit>, the transaction is put into a redo state.

Start
Commit
Tn
None

Answer: C) Tn

Explanation:

When the recovery system sees a transaction log containing <Tn, Start> and <Tn, Commit> or just <Tn, Commit>, the transaction is put into a redo state.

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When the recovery system sees a transaction log containing <__, Start> and <__, Commit> or just <__, Commit>, the transaction is put into a redo state

When the recovery system sees a transaction log containing <, Start> and <, Commit> or just <__, Commit>, the transaction is put into a redo state