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Which of the following statements is the definition of degree of a relation?
The degree of a relation is the number of attributes it contains.
The degree of a relation is the number of different values in a candidate key.
The degree of a relation is the number of alternate keys in the relation.
The degree of a relation is the number of candidate keys of the relation.
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Which of the following statements related to normalization are true and which are false? The single attribute K is the primary key.
A table in second normal form is also a 3NF table.
The table T (K, A1, A2, A3) is definitely a 2NF table.
The table T (K, A1, A2, A3) is definitely a 3NF table.
The table T (K, A1) is definitely a 2NF table.
The table T (K, A1) is definitely a 3NF table.
A table is in 2NF if the table is in 1NF and there are no null values in primary key fields.
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difficile). Vuoi saperne di più? Consulta il
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