In the context of normalization, what is a candidate key?Question 16Answera.An attribute that can be used to index a tableb.An attribute or set of attributes that uniquely identifies a recordc.A key that can be used as a primary keyd.Both a and c
Question
In the context of normalization, what is a candidate key?Question 16Answera.An attribute that can be used to index a tableb.An attribute or set of attributes that uniquely identifies a recordc.A key that can be used as a primary keyd.Both a and c
Solution
A candidate key is an attribute or set of attributes that uniquely identifies a record in a database. This means that no two records would have the same combination of values for these attributes.
In the context of normalization, a candidate key is important because it helps to ensure that the data in the table is consistent and not duplicated.
In addition, a candidate key can also be used as a primary key. A primary key is a special kind of candidate key that is chosen by the database designer to uniquely identify each record in the table.
So, the correct answer to the question would be both b and c.
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