May 2024
Intermediate to advanced
325 pages
12h 2m
English
Content preview from Distributed Database Systems, 1st Edition by Chhanda Ray
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Overview of Relational DBMS
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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-
fi 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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