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What is BCNF (Boyce -Codd Normal Form)? - Database management system
Presidency University, Bangalore - Database management system
A relationship is said to be in BCNF if it is already in 3NF and the left hand side of every dependency is a candidate key.
A relation which is in 3NF is almost always in BCNF. These could be same situation when a 3NF relation may not be in BCNF the following conditions are found true.
The candidate keys are composite.
There are more than one candidate keys in the relation.
There are some common attributes in the relation.
A relationship is said to be in BCNF if it is already in 3NF and the left hand side of every dependency is a candidate key.
A relation which is in 3NF is almost always in BCNF. These could be same situation when a 3NF relation may not be in BCNF the following conditions are found true.
The candidate keys are composite.
There are more than one candidate keys in the relation.
There are some common attributes in the relation.
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