Question: The outer-join operations extend the natural-join operation so that tuples from the participating relations are not lost in the result of the join. Describe how

The outer-join operations extend the natural-join operation so that tuples from the participating relations are not lost in the result of the join. Describe how the theta join operation can be extended so that tuples from the left, right, or both relations are not lost from the result of a theta join.

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a The left outer theta join of rR and sS rs can be defined ... View full answer

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