Question 41
2 / 2 pts
Which type of data integrity constraint states that the value entered for any field should be
consistent with the data type for that field?
data type
legal value
format
secondary
Question 42
2 / 2 pts
What occurs when two or more users are waiting for the other user to release a lock before their
transaction can proceed?
commit
timestamp
deadlock
transaction
Question 43
2 / 2 pts
What type of rules specify which users have what type of access to which data in the database?
encryption
authentication
authorization
privacy
Question 44
2 / 2 pts
Which property of a DBMS lets you change the database structure without requiring you to
change the programs that access the database?
field independence
data integrity constraints
key integrity constraints
data independence
Question 45
2 / 2 pts
What does a DBMS do to break a deadlock?
rolls back all transactions involved in the deadlock
chooses one deadlocked user to be the victim
closes the database and restores from the last backup
erases the records involved in the deadlock and reschedules the transactions