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Cast each of the following problems into a language recognition problem. You only need to describe the language to be recognized (Hint: study the examples
Cast each of the following problems into a language recognition problem. You only need to describe the language to be recognized (Hint: study the examples discussed in class, e.g., casting multiplication).
(1) Given two sets S1 and S2, compute their union
(2) Given a database D and a query Q, compute the results of Q executed against D.
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