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Which of the following is a type of Normal Form?

Question

Which of the following is a type of Normal Form?

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Solution

The question seems to be incomplete as there are no options provided. However, in the context of database management systems, there are several types of Normal Forms, including:

  1. First Normal Form (1NF)
  2. Second Normal Form (2NF)
  3. Third Normal Form (3NF)
  4. Boyce-Codd Normal Form (BCNF)
  5. Fourth Normal Form (4NF)
  6. Fifth Normal Form (5NF) or Project-Join Normal Form (PJNF)
  7. Domain/Key Normal Form (DKNF)

Each of these Normal Forms has specific rules and conditions that a database must meet. They are used to eliminate or reduce redundancy and dependency of data, which can improve the integrity and efficiency of the database.

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Which one of the following statements about normal forms is FALSE?

Choose the correct answerWhich one of the following statements about normal forms is FALSE?OptionsLossless, dependency–preserving decomposition into BCNF is always possibleLossless, dependency-preserving decomposition into 3 NF is always possibleBCNF is stricter than 3 NFAny relation with two attributes is BCNF

1. Normal formsWe have the attributes: {A, B, C, D, E, F, G}.Consider the following functional dependenciesA, C, F -> D, EA -> CA, C, F -> B, EF -> A, BA, C -> E, F, GA, F, G -> C, DB, C -> DB -> AThe minimal keys are:{B}{F}{A}Determine whether these functional dependencies are in the following normal form(s):Boyce Codd normal form2. Normal formsWe have the attributes: {A, B, C, D, E, F, G}.Consider the following functional dependenciesF -> E, GA, G -> C, D, EA, B -> FD -> F, GB, E, F -> D, GA, D, E -> B, FB, D, F -> A, EF, G -> B, D, EThe minimal keys are:{D}{F}{A, B}{A, G}Determine whether these functional dependencies are in the following normal form(s):Boyce Codd normal form3. Normal formsWe have the attributes: {A, B, C, D, E, F, G}.Consider the following functional dependenciesB, C, D -> E, GB -> A, ED, E -> CA, C -> B, D, EB -> C, DD, F, G -> AG -> BB, C -> FThe minimal keys are:{B}{G}{A, C}{A, D, E}Determine whether these functional dependencies are in the following normal form(s):Boyce Codd normal form4. Normal formsWe have the attributes: {A, B, C, D, E, F, G}.Consider the following functional dependenciesA, F, G -> CC, F -> GB -> C, FA, D, E -> CE, F, G -> B, CA, B, F -> D, E, GB, C -> A, DA, C, F -> GThe minimal keys are:{B}{C, E, F}{E, F, G}{A, D, E, F}Determine whether these functional dependencies are in the following normal form(s):Boyce Codd normal form5. Normal formsWe have the attributes: {A, B, C, D, E, F, G}.Consider the following functional dependenciesD -> BF -> AB, C, D -> E, FA -> GE, F -> CA, D -> E, FE, F -> GC, F -> A, EThe minimal keys are:{D, F}{C, D}{A, D}Determine whether these functional dependencies are in the following normal form(s):Boyce Codd normal form6. Normal formsWe have the attributes: {A, B, C, D, E, F, G}.Consider the following functional dependenciesC -> EE -> D, GD -> FF -> B, GF -> C, D, EG -> FC -> FC, G -> EThe minimal keys are:{A, E}{A, C}{A, F}{A, G}{A, D}Determine whether these functional dependencies are in the following normal form(s):Boyce Codd normal form

A given table which does not have a transitive dependency and is in the second normal form is known to be in the A. Third normal form B. General form C. Second normal form D. First normal form

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