Importance of Data Backup.

Data Backup is very important as you may loss your data due to hardware failure of data corruption. To keep proper data backup you should use pen drive or cd/dvd writer.Keeping backup on another harddisk on another computer is helpful but not sufficient.You should keep the backup copy of data in separate physical location.

Frequency of backup should be daily or more than once in a day.You should keep six/seven separate sets of backup for each week day and one set of backup for each month/financial year.Data corruption can happen in any software application and backup is the only way for survival in this situation.There are many reasons for data Corruption.Possible causes for data corruption are:

1. Abnormal termination of the application while manipulation data.This would include loss of power, voltage spikes, internal consistency errors,page faults, and fatal exception errors.

2. Substandard or faulty network components: Because Foxpro handles data so quicky, it can stress the network.These components may include network drivers, network interface cards,cabling,hubs and switches.

3. Data storage components: Storage devices should be checked regulary for errors and fragmentation.

4. Confilicting software: Software such as Antivirus packages, screen savers and terminate-and-stay-resident application (TSRs) can cause conflicts with Visual Foxpro that could cause data corruption.

5. Incompatible video drivers: Certain video drivers can cause FoxPro to become unstable and terminate abnormally.See the "References" section in this article for more details.

6. Network Settings and Service Packs: Make sure that your servers are running the latest service packs,check client settings (such as caching), and even try switching network client drivers(such as from the Novell Netware Client to the Microsoft Client for Netware).