Discussion
Which type of database design is used to reduce redundancy and improve integrity ?
Answer: B
The design used to reduce redundancy is Normalization.
Normalisation organises tables through normal forms (1NF, 2NF, 3NF, BCNF), splitting data so each fact is stored once. This removes redundancy and the insert, update and delete anomalies it causes, improving data integrity.
Denormalisation deliberately adds redundancy to speed up reads, which is the opposite. Hybrid and object-oriented designs are not the technique for this purpose.
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