Chapter 8

With a centralised database a single logical database is located at one site under the control of a single DBMS. True or False?
1. True
2. False
A client/server system is one in which processing is distributed. True or False?
1. True
2. False
A client/server system is one in which data is replicated. True or False?
1. True
2. False
A server in a client/server system can also act as a client. True or False?
1. True
2. False
In a Distributed Database System a single data processing task will span several machines in the network. True or False?
1. True
2. False
The term ‘data replication’ refers to the splitting up of a logical relation of database into separate physical relations. True or False?
1. True
2. False
In a Distributed Database System we would expect all DBMS’s at each site to be the same (e.g. Oracle or MS Access) and all machines to be of similar specifications. True or False?
1. True
2. False
A major advantage of distributed database systems is that data can be stored at the site where it is most used. True or False?
1. True
2. False
Replication increases the availability of data. True or False?
1. True
2. False
Asynchronous replication is appropriate for applications, such as financial ones, which must keep all replicas fully synchronised. True or False?
1. True
2. False