Issues in Data Management

Data Entry
Data Updates
Data integrity
Data security
Data accessibility

Data Entry

New titles are added every day
New customers are being added every day
Some of the above may require manual entry of new data into the computer systems
That can be achieved, for one, by user-interfaces that prevent the input of invalid data

Data Updates

Old titles are deleted on a regular basis
Inventory changes every instant
Bookd prices change
Shipping cost change
Customers perosnal data chage
Various discoutn schemes are always commencing and concluding
All those actions require updates to existing data

Data Security

All the data that Bholibooks has in its computer systems in quite critical to its operation
The security of the customers personal data is of utmost improtance. Hackers are always looking for that type of data, espically for credit card numbers
Enough leaks of that type and customers will stop doing busness with Bholibooks.

Data Integrity

Integrity refers to maintaing the correctness and consistencey of the data
Correctness free from errors
Consistencey no conflict among related data items
Integrity can be compromised in many ways
Typing errors
Transmission errors
Hareware malfunctions
Program bugs
Viruses
Fire, flood etc.

Data Accessibility

If the transaction and inventory data is placed in a disorganized fashion on a hard disk, it becomes very diffucult to later search for a stored data item
What is required is that
Data be stored in an organized manner
Additional info about hte data be storedso that the data access times are minimized.