Explanation:Locks are used to maintain database consistency. 2. A lock that allows concurrent transactions to access different rows of the same table is known as a
A. Database-level lock
B. Table-level lock
C. Page-level lock
D. Row-level lock
Answer:A
Explanation:Locks are used to maintain database consistency. 2. A lock that allows concurrent transactions to access different rows of the same table is known as a
A. Database-level lock B. Table-level lock C. Page-level lock D. Row-level lock
Explanation:Locks are used to maintain database consistency. 3. Which of the following are introduced to reduce the overheads caused by the log-based recovery?