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IC is Integrity Constraint (b) Define in relational calculus (predicate logic) and SQl a violation view for the IC. [4 points (c) Define in SQL,

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(b) Define in relational calculus (predicate logic) and SQl a violation view for the IC. [4 points (c) Define in SQL, an active rule (or trigger) that clearly contains the three components for the maintenance of the IC. It has to use the view you defined in the previous item. Before specifying it, explain in words what maintenance policy you decided to specify. (4 points

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