Updating records in multiple locations or copying an entire database on to a remote location as a means to ensure the appropriate levels of fault-tolerance and redundancy is known as
A.
Data mirroring
B.
Database shadowing
C.
Backup
D.
Archiving
Explanation:
B: Data mirroring is a RAID technique that duplicates all disk writes from one disk to another to create two identical drives. Database shadowing is the technique in which updates are shadowed in multiple locations. It is like copying the entire database on to a remote location. Backups are to be conducted on a regular basis and are useful in recovering information or a system in the event of a disaster. Archiving is the storage of data that is not in continual use for historical purposes. Page 549.
Data mirroring is a RAID technique that duplicates all disk writes from one disk to another to create two identical drives. Database shadowing is the technique in which updates are shadowed in multiple locations. It is like copying the entire database on to a remote location. Backups are to be conducted on a regular basis and are useful in recovering information or a system in the event of a disaster. Archiving is the storage of data that is not in continual use for historical purposes.
0
0