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  

unauthorized user.

5.Integrity Rules can be applied.

 

Levels of Database Implementation

Internal Level ( Physical Level )
Conceptual Level
External Level ( View Level )
 
Internal Level ( Physical Level )
The lowest level of database which is closest to the physical storage. It describes how the data  is actually stored on the storage medium.
 
Conceptual Level
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.
 
View Level ( External Level )
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.
 

Data Independence

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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Download PowerPoint Presentation on Database Concepts.PPT


PowerPoint Presentation on Database Concepts (PPT File)
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Further Reading:
http://en.wikipedia.org/wiki/Powerpoint
http://en.wikipedia.org/wiki/Database
http://en.wikipedia.org/wiki/Concepts
http://en.wikipedia.org/wiki/Ppt

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Posted by: Prateek on June 10, 2014


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