What level of normalization requires that all columns be atomic? 2NF BCNF None of these 1NF 3NF 4NF
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An atomic column is a column that contains only one value, and that value cannot be further divided. Show more…
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Question 15: Which of the statements about database normalization is true? Statements: i) Database normalization improves data redundancy, saves on storage space, and fulfills the requirement of records to be uniquely identified. ii) Database normalization supports up to 3rd normal form and removes all data anomalies. iii) Database normalization removes inconsistencies which may cause the analysis of our data to be more complicated. iv) Database normalization increases data redundancy, saves on storage space, and fulfills the requirement of records to be uniquely identified. Options: - (i), (ii) - (i), (iii) - (ii), (iv) - (iii), (iv)
Akash M.
For a database relation $x(a, b, c, d)$, where all the domains of $a, b, c, d$, include only atomic values, only the following FDs and those that can be inferred from them hold. $a \rightarrow b, c \rightarrow d$ the relation is (A) In 1st NF but not in 2 nd $\mathrm{NF}$ (B) In 2 nd $\mathrm{NF}$ but not in $3 \mathrm{rd} \mathrm{NF}$ (C) In 2nd NF (D) In 3rd NF
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