Many application need data and the data should be organized so that any department in the company sue it. A huge number of data make difficult to manage it. In the past the firms are using files and document for storing the data that make difficult to find whatever you need.



Why data are difficult to manage?

*The amount of data are increasing rapidly.

*Data are scatter and it is form various place.

*Data come from internal and external sources.

*Data come from the web and it record what are doing there.     

The data level:

Data started with bit that is smallest unit of data. A group of bits called byte that single character. When grouping of those characters called a filed. A related field called record. Finally, the group of related field called database.

What data base do?

It minimize data redundant , data isolation, data inconsistency.

It maximize data securities , data integrity and data independent