PowerPoint Presentation on Database Concepts (PPT File)A PowerPoint Presentation on Database Concepts, With .PPT Microsoft PowerPoint File attached. It can be used by School Students for High School Classes.
PowerPoint Presentation Content Sample:
Advantages of Database Concepts
1.Data Redundancy ( Duplication of Data ) is removed.
2.Data Inconsistency can be controlled.
.Sharing of Data.
4.Security of Data.
It means data can be protected from an
5.Integrity Rules can be applied.
Levels of Database Implementation
The lowest level of database which is closest to the physical storage. It describes how the data is actually stored on the storage medium.
The level of database which describes what data is actually stored in the database.At this level the relationship between the data elements is described.
The level of database which is closest to the user. It is only concerned with the way how the data is viewed to the users .The System is able to create more than one views for the end user on the basis of the data stored.
The ability to modify a scheme definition at one level without affecting scheme definition of next higher level.
It is of two types:
( 1 ) Physical Data Independence
( 2 ) Logical Data Independence
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