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PreviousTo include integrity constraint in an existing relation use (i) create table (ii) modify table (iii) alter table (iv) drop tableNextConsider the universal relation R = \{A, B, C, D, E, F, G, H, I\} and the set of functional dependencies F = \{\{A, B\} \rightarrow \{C\}, \{A\} \rightarrow \{D, E\}, \{B\} \rightarrow \{F\}, \{F\} \rightarrow \{G, H\}, \{D\} \rightarrow \{I, J\}\} What is the key for R? Decompose R into 2NF, then 3NF relations.
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