Give a rule for converting each of the following forms of, Ask an Expert

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Give a rule for converting each of the following forms of to relational algebra. All conditions may be assumed to be applied (by a two-argument selection) to a relation R. You may assume that the subquery is not correlated with R. Be careful that you do not introduce or eliminate duplicates in opposition to the formal definition of SQL.

a) A condition of the form EXISTS ().

b) A condition of the form a - ANY , where a is an attribute of R.

c) A condition of the form a - ALL , where a is an attribute of R.

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Computer Engineering, Engineering

Category:- Computer Engineering
Reference No.:- M91968770

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