The concurrency protocols which ensure both conflict serializability and freedom from deadlock

Q.  State the concurrency protocols which ensure both conflict serializability and freedom from deadlock
1. 2-phase locking
2. Time-stamp ordering
- Published on 16 Jun 15

a. 1 only
b. 2 only
c. Both 1 and 2
d. Neither 1 nor 2

ANSWER: 2 only
 
As the time- stamp ordering is a non-lock concurrency control method. It is used to safely handle transactions.

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