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When is a relation considered to be in first normal form (1NF)?Select one:a.When there are no dependencies of an attribute on another attribute in the tableb.When there are no compound primary keys or partial key that can have a null valuec.When there are no partial dependencies or transitive dependencies on a primary keyd.When there are no repeating groups of values of an attribute in one or more columns

Question

When is a relation considered to be in first normal form (1NF)?Select one:a.When there are no dependencies of an attribute on another attribute in the tableb.When there are no compound primary keys or partial key that can have a null valuec.When there are no partial dependencies or transitive dependencies on a primary keyd.When there are no repeating groups of values of an attribute in one or more columns

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Solution

A relation is considered to be in first normal form (1NF) when there are no repeating groups of values of an attribute in one or more columns.

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Which of the following is true for a relation in First Normal Form (1NF)?Question 13Answera.It contains no repeating groups or arraysb.It has a primary keyc.All attributes depend on the whole primary keyd.It contains no transitive dependencies

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Which statement best describes the purpose of Second Normal Form (2NF)?a.2NF allows redundancy to be eliminated completely from the relationb.2NF allows for the nesting of relations within relations, enhancing data organizationc.2NF ensures that every non-prime attribute is fully functionally dependent on the entire candidate key, thus removing partial functional dependenciesd.2NF ensures that every attribute in the relation is functionally dependent on the primary key

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