Explanation: If transaction Ti gets an explicit lock on the file Fc in exclusive mode, then it has an implicit lock in exclusive mode on all the records belonging to that file. 7. Which refers to a property of computer to run several operation simultaneously and possible as computers await response of each other
A. Concurrency
B. Deadlock
C. Backup
D. Recovery
Answer:A
Explanation: If transaction Ti gets an explicit lock on the file Fc in exclusive mode, then it has an implicit lock in exclusive mode on all the records belonging to that file. 7. Which refers to a property of computer to run several operation simultaneously and possible as computers await response of each other
A. Concurrency B. Deadlock C. Backup D. Recovery
Explanation: Concurrency is a property of systems in which several computations are executing simultaneously, and potentially interacting with each other. 8. All lock information is managed by a ____, which is responsible for assigning and policing the locks used by the transactions.