Sunday, June 3, 2007

Question 73

Which is the appropriate description of the purpose of normalization?

a) To increase database access efficiency by eliminating data duplication, for all types of data models.
b) Dependencies among attributes are identified as functional dependences and/or multivalued dependences, so that the number of physical I/O operations can be minimized.
c) By performing normalization up to the third normal form, the same relational tables can be obtained regardless of the persons who may do it, thus eliminating personal dependency.
d) The duplication of data is eliminated, and duplicated updates and inconsistencies which may occur as database operations are performed are thereby prevented.


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