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Database

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Issue:

Technology

 

Written by:

Ilene E

 

Date added:

June 28, 2015

 

Level:

University

 

Grade:

A

 

No of pages / words:

4 / 847

 

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5724 times

 

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F. Codd in 1969, then a researcher at IBM. The model is based on branches of mathematics called set theory and predicate logic. The basic idea behind the relational model is that a database consists of a series of unordered tables (or relations) that can be manipulated using non-procedural operations that return tables...
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This model was in vast contrast to the more traditional database theories of the time that were much more complicated, less flexible and dependent on the physical storage methods of the data. The logical view of Data The relational database model enables us to think about out data logically rather than physically and we design our database base on the entities and tables and their attributes and provide it as simple diagrams to the users...
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