DATABASE SYSTEM CONCEPTS LCPO
7th Edition
ISBN: 9781265586577
Author: SILBERSCHATZ
Publisher: MCG
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Chapter 8, Problem 11E
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Relational schema in third normal form
A relational schema is said to be in third normal form when for all functional dependencies one of the situation holds true.
- The functional dependency is a trivial functional dependency.
- The first attribute in functional dependency is the super key for the relational schema.
- Each attribute in the functional dependency is a candidate key for the relational schema.
- For redesigning the relational schema in the third normal form, then the following constraints can be placed on sub-tables...
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DATABASE SYSTEM CONCEPTS LCPO
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