Question 4 of the specimen paper says
Scottish Airways operate a real-time booking system. To ensure the security
of the data they make a daily backup of the whole system.
Explain what additional backups would be required to ensure no loss of data
in the event of a system failure.
The answer given is surly just wrong.
Incremental backups (1 mark) would ensure no loss of transaction data in
between the daily backups (1 mark).
Award first mark where description of backup is correct with or without word
incremental.
Night time backups are often incremental, fair enough in the question it say’s “daily backup of the whole system.” so you might infer a full backup. However, who would run an incremental backup during the working day? Surely something like shadow copies or versions would be more accurate?
http://searchdatabackup.techtarget.com/feature/Full-incremental-or-differential-How-to-choose-the-correct-backup-type
https://en.wikipedia.org/wiki/Shadow_Copy
.
