Relational operators union of two sets

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Reference no: EM133940737

Question

Consider relational operators "union of two sets", "intersection of two sets", "x", "Pi","o","infinite" and tables with a valid primary key (i.e sets). Which operators may produce duplicate during query evaluation in intermediate tables in SQL? Explain why. Extra: Show SQL query examples for the operators you listed, with and without duplicates, based on these simple tables: T1(A,B) and T2(C,D), where all columns are integers.

Reference no: EM133940737

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