The measures taken to prevent one user’s work from inappropriately
influencing another user’s work are called…………
a) concurrency control
b) checkpoint
c) database recovery
d) database logging
Which of the following is known as logical unit of work?
a) transaction
b) atomicity
c) consistency
d) isolation
How many properties of transaction?
a) one
b) two
c) three
d) four
Explanation: atomicity, consistency, isolation, durability
When is transaction completed successfully it is said to be?
a) consistency
b) isolation
c) durability
d) committed
The modifications made by a transaction are permanent and persistent is called…
a) consistency
b) isolation
c) durability
d) committed
The situation in which two or more users access the same piece of data is called…
a) consistency
b) isolation
c) durability
d) concurrency
