Fourth Normal Form (4NF) is useful because it addresses multi-valued dependencies, which can lead to redundancy and anomalies in database design. By ensuring that no table contains two or more independent multi-valued facts about an entity, 4NF helps to eliminate data duplication and maintain data integrity. This normalization process improves the efficiency of data retrieval and updates, making databases more manageable and consistent over time. Ultimately, 4NF contributes to a cleaner, more organized database structure that enhances overall performance.
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The Antarctic ozone hole is not useful. It was harmful.
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Type your answer here... What is useful of a microorganism
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Because 4nf minimize the redundancy as well as make storage management..
The purpose of 4NF, or the 4th Normal Form, is to remove multivalued dependencies. This means that by adding a new value to the database, multiple other values are not required to maintain consistency.
a relation R is in 4NF if and only if,whenever there exist a MVD in R, say A->>B, then all attribute of R are also FD on A. C.J Date by zahir shah MSCSype your answer here...
Normalization is a process to reduce the redundancy by removing function dependencies BCNF (Boyece code normal form) has all functional dependencies A to B are trivial of discriminator should be superkey. To get relation in BCNF, Splitting the relation schema not neccessarily preserve all functional dependency, Loss less decomposition and dependency are main points for the normalization sometime, it is not possible to get a BCNF decomposition that is dependency, preserving. While 4NF has very similar definition as BCNF. A relational Schema is in 4NF, if all multivalued dependencies A to B are trivial and determinate A is superkey of schema. If a relational schema is in 4nf, it is already in BCNF. and 4NF decomposition preserve the all functional dependency. so 4NF is preferable than to have BCNF.
4th and 5th Normal Form - to do with databases. That's all I know sorry.
There are several normal forms are available in DBMS.those are1NF,2NF,3NF,BCNF,4NF,PJNF(project Join),DKNF(Domain Key).
Most useful and more useful.
more useful, the most useful
The comparative form of "useful" is "more useful."
more useful, most useful
Computers are so useful to us.Bert is not a very useful person.I find that the phone is a useful invention.Make yourself useful and pass me the spanner.Hopefully these sentences are useful to you.
how are mirrors useful ? how are mirrors useful ?