I am beginner in IT world, but i am very interested to discover it.
I have a basic knowledge about Wep application and database it just need time to become an expert.
1-Data redundancy exists when unnecessarily duplicated data are found in the database,also data redundancy is indicative of a (computer) file system.
Data redundancy may also be the result of poorly‑designed databases that allow the same data
to be kept in different locations.
2- is when changes can be made to the data storage characteristics,
without the need to change the application program that accesses the data.
Files systems
show structural dependence, which means that access to the data is dependent on the
structure. If changes are made to the file structure the applications to access that data
must also be changed.
3-.Data is raw material for data processing. data relates to fact, event and transactions.
.Information is data that has been processed in such a way as to be meaningful to the person who receives it. it is any thing that is communicated.
4- is a collection of programs that manages the database structure and controls access to the data stored in the database.
Improved data sharing
Better data integration
Minimized data inconsistency
Improved data access
