Choose the correct answerWhich forms are based on the concept of functional dependency:Options2NF1NF3NF4NF
Question
Choose the correct answerWhich forms are based on the concept of functional dependency:Options2NF1NF3NF4NF
Solution
All of the forms mentioned are based on the concept of functional dependency. These include:
- First Normal Form (1NF)
- Second Normal Form (2NF)
- Third Normal Form (3NF)
- Fourth Normal Form (4NF)
Each of these forms has specific rules about the kinds of functional dependencies it allows. For example, a table is in 2NF if it is in 1NF and no non-prime attribute is dependent on any proper subset of any candidate key of the table. A table is in 3NF if it is in 2NF and every non-prime attribute of the table is non-transitively dependent on every key of the table. And so on.
Similar Questions
Which forms are based on the concept of functional dependency:a.2NFb.1NFc.3NFd.4NF
Choose the correct answerWhich of the normal form is based on multivalued dependencies?OptionsSecondFirstThirdFourth
Select the correct answerThe second Normal Form is based on :OptionsRemoving Transitive DependenciesRemoving Partial DependenciesRemoving multiple overlapping candidate keysRemoving Multivalued dependency
Choose the correct answerWhich forms has a relation that possesses data about an individual entity:Options2NF4NF5NF3NF
Choose the correct answerWhich one of the following statements about normal forms is FALSE?OptionsBCNF is stricter than 3 NFLossless, dependency–preserving decomposition into BCNF is always possibleAny relation with two attributes is BCNFLossless, dependency-preserving decomposition into 3 NF is always possible
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