- Minimization of unnecessary data or minimization of redundant data.
Data redundancy is the duplication of the same
data at more than one storage place. This redundancy has to be eliminated by adding the
data in one place. The table in the
database should always have a primary key that would be a unique id. This will control redundancy and improve system performance.
Inconsistency means when we query for the same
data, that is placed on two different places, then the result will not same. Consistency of
data has to be achieved through controlling the unnecessary
data.
The objective/aim of the
database is to satisfy the
data requirement of the various new applications without the need of having separate
data for each application.
Another objective of the
database should be flexible enough. This is needed to meet future specifications. In the future, requirements can be changed so the
database should be able to meet them. So, it should make the application developments, cheaper, faster, and flexible.
One of the most important objectives of the
database is
database is to eliminate the need to rewrite the application program in case of hardware. The
database should adapt/meet the new setup without rewriting programs.
The accuracy of the
database ensures that the quality and content of
data remains content.
Privacy means when, how, and to what part os
data should be given to users. The
database is costly products so, their security is very important.
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