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Distributed Database Systems, 1st Edition by Chhanda Ray
book

Distributed Database Systems, 1st Edition by Chhanda Ray

by Chhanda Ray
May 2024
Intermediate to advanced content levelIntermediate to advanced
325 pages
12h 2m
English
Pearson India
Content preview from Distributed Database Systems, 1st Edition by Chhanda Ray
Overview of Relational DBMS
7
Emp-proj
Emp-id project-no Hobby
E01 P01 Reading
E01 P01 Singing
E02 P02 Swimming
E02 P04 Reading
E02 P02 Reading
E02 P04 Swimming
Fig. 1.2 An example of Multi-valued Dependency
1.3.2 Normal Forms
In each normal form, there are some known requirements, and a hierarchical relationship exists
among the normal forms. Therefore, if a relation satisfi es the requirements of 2NF, then it also satis-
es the requirements of 1NF. A relation is said to be in 1NF, if domains of the attributes of the rela-
tion are atomic. In other words, a relation that is in 1NF should be fl at with no repeating groups.
A relation in 1NF must not ...
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