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What is the difference between 3NF and BCNF?

Boyce-codd normal form(BCNF) was proposed as a simpler form of 3NF,but it was found to be stricter than 3NF,because every relation in BCNF is also in 3NF.However a relation in 3NF is not necessarily in BCNF.


What is overlapping key DBMS?

Overlapping Key is a type of candidate key which occurs in BCNF (Boyce –Codd Normal Form).In the difference between 3NF and BCNF Example : A 3NF table which does not have multiple overlapping candidate keys is guaranteed to be in BCNF. Depending on what its functional dependencies are, a 3NF table with two or more overlapping candidate keys may or may not be in BCNF.


Why bcnf is stronger than 3nf?

A relation R is in 3NF if and only if every dependency A->B satisfied by R meets at least ONE of the following criteria: 1. A->B is trivial (i.e. B is a subset of A) 2. A is a superkey 3. B is a subset of a candidate key BCNF doesn't permit the third of these options. Therefore BCNF is said to be stronger than 3NF because 3NF permits some dependencies which BCNF does not.


Is animation done after 10th preferable or after 12th is more preferable?

12th one is more preferrable


Is more joules better than less joules?

It depends on the context. In some cases, more joules can mean more energy or power, which may be better. But in other cases, less joules may indicate greater efficiency or less waste, which could be preferable.


Why 4NF is more desirable Normal Form than BCNF?

Because 4nf minimize the redundancy as well as make storage management..


Is it grammatically correct to say most preferable?

Yes, most preferable is the superlative form of the adjective preferable; the comparative is more preferable.


Do you say preferable in the afternoons?

Yes, it is preferable to use "preferable" in the afternoons as per language conventions. Remember to use it when expressing a choice or option that is more desirable or favorable.


Is disc preferable in rear n why?

Yes rear disc brakes is preferable because it has smoother, more controlled, more effective braking capabilities.


Are low calories alternatives always preferable?

no they are not always preferable because sometimes you need more calories or someting


Skiing or the iPhone?

In my opinion, iPhone is more preferable.


Why is it that weight batching of aggregate is more preferable to volume batching of aggregate?

why is batching of aggregate by weight is preferable than batching by volume