Tuple Relational Calculus A nonprocedural query language,where each query is of the form (tP(t)) It is the set of all tuples t such that predicate P is true for t t is a tuple variable,t [A denotes the value of tuple t on attribute A f e r denotes that tuple t is in relation r P is a formula similar to that of the predicate calculus Database System Concepts-6th Edition 6.13 @Silberschatz,Korth and SudarshanDatabase System Concepts - 6 6.13 ©Silberschatz, Korth and Sudarshan th Edition Tuple Relational Calculus A nonprocedural query language, where each query is of the form {t | P (t ) } It is the set of all tuples t such that predicate P is true for t t is a tuple variable, t [A ] denotes the value of tuple t on attribute A t  r denotes that tuple t is in relation r P is a formula similar to that of the predicate calculus