19. Draw the query tree for the SQL statement below, then draw the optimized heuristic tree. PID is the Primary key of Provider e SELECT Provider.Name, Networking.Name, Show.Name, Show.Description FROM Provider, Network, Show WHERE Provider.PID = Network.PID AND Show.NetworklD = Network.NetworkID AND Show.Rating > 4 AND Provider.PID = 456

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A:

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A:

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A: Will be explained :

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