Question: Prove that the query (D1 D2) (D3 (D4 D5)) can be answered immediately at both x1 and x3 if each of

Prove that the query (D1 − D2) ∩ (D3 − (D4 ∩ D5)) can be answered immediately at both x1 and x3 if each of the sets is stored by its entity using the DSP method.

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