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- Consider a relation of scheme Building(Street, Number, No.Apartments, Color, Age).
- TRC: find the oldest building in Downing Street.
- SELECT MAX(Age) AS ‘Oldest building’, Street FROM Building WHERE Street = ‘Downing Street’;
- {V.*|V(B) | V.BAge >=Age ^ V.Bstreet = ‘Downing Street’}
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