Denormalization in Database:
Denormalization is a process of Transforming normalized relations into unnormalized physical record specifications.
A good relational DBMS excels at managing normalized relations; that is, relations void of any unnecessary redundancies that might cause data anomalies. Although the creation of normalized relations is an important database design goal, it is only one of many such goals. Good database design also considers processing (or reporting) requirements and processing speed. The problem with normalization is that as tables are decomposed to conform to normalization requirements, the number of database tables expands.
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