Generally, it is good practice to normalize to 3NF, but it is often not possible to achieve BCNF. Sometimes, in fact, 3NF is too inefficient, and we re-consolidate for the sake of efficiency two tables factored apart in the 3NF process.

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Normalization Book:-ISBN !(title, language, MRP, publisher, pub date) Note that the ISBN is the candidate key for BOOK table. The corresponding set F+ corresponding to the above functional dependency can be divided into two sets ( rule ! ): 1) contains the candidate key, ISBN, then would contain the whole schema attributes.

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normalization properties. There are several normal forms defined: • 1NF -First Normal Form • 2NF -Second Normal Form • 3NF -Third Normal Form • BCNF -Boyce-CoddNormal Form • 4NF -Fourth Normal Form • 5NF -Fifth Normal Form Each of these normal forms are stricter than the next. For example, 3NF is better than 2NF because it removes more

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Jul 14, 2018 · Normalization BCNF 3NF 2NF 1NF a relation in BCNF, is also in 3NF a relation in 3NF is also in 2NF a relation in 2NF is also in 1NF 5. First Normal Form We say a relation is in 1NF if all values stored in the relation are single-valued and atomic. 1NF places restrictions on the structure of relations. Values must be simple. 6.

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Which-one ofthe following statements about normal forms is FALSE? a. BCNF is stricter than 3 NF: b. Lossless, dependency -preserving decomposition into 3 NF is always possible: c. Loss less, dependency – preserving decomposition into BCNF is always possible: d. Any relation with two attributes is BCNF

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DBMS - Normalization - Functional dependency (FD) is a set of constraints between two attributes in a relation. Functional dependency says that if two tuples have same values for attr.