Which of the following is used to access remote sites and allow transfer of queries?
a) extended communication services
b) extended catalog system
c) distributed query processing
d) extended recovery services
Which of the following is used to store data distribution details?
a) extended communication services
b) extended catalog system
c) distributed query processing
d) extended recovery services
Which of the following is used to maintain consistency of replicated data?
a) extended concurrency control
b) extended catalog system
c) distributed query processing
d) extended recovery services
Which of the following can recover from individual site crashes and
failure of links?
a) extended communication services
b) extended catalog system
c) distributed query processing
d) extended recovery services
How many types of DDBMS?
a) one
b) two
c) three
d) four
Explanation: homogeneous, heterogeneous
Which of the following database means that the database technology is the same or at least compatible at each other is called?
a) homogeneous database
b) heterogeneous database
c) object database
d) none of these
