Which of the following describes a relation is in first normal form (1NF)?Select one:a.It has no identical rowsb.It has no repeating groupsc.It has no partial functional dependenciesd.It has no transitive functional dependencies
Question
Which of the following describes a relation is in first normal form (1NF)?Select one:a.It has no identical rowsb.It has no repeating groupsc.It has no partial functional dependenciesd.It has no transitive functional dependencies
Solution
A relation is in first normal form (1NF) if it satisfies the following conditions:
a. It has no identical rows b. It has no repeating groups
So, the correct answer is both a and b.
However, if you have to choose only one option, then the most appropriate answer would be b. It has no repeating groups. This is because the primary rule of the first normal form is that it should have no duplicate rows and each attribute value must be atomic (indivisible).
The conditions c. It has no partial functional dependencies and d. It has no transitive functional dependencies are related to the second and third normal forms respectively.
Similar Questions
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
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
When is a relation considered to be in second normal form (2NF)? (Select the best answer.)Select one:a.When there are no repeating groups in a relationb.When there are no transitive functional dependenciesc.When there are no dependencies on part of the primary keyd.When there are no dependent attributes in transitive relation
Which normal form deals with the elimination of transitive dependencies?Question 10Answera.Boyce-Codd Normal Form (BCNF)b.Third Normal Form (3NF)c.First Normal Form (1NF)d.Second Normal Form (2NF)
If a table is in Third Normal Form (3NF), which of the following must be true?Group of answer choicesIt has no transitive dependenciesAll attributes are functionally dependent on the primary keyIt is in 1NF and 2NFAll the Available Options
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