Question 752 If D1, D2…Dn are domains in a relational model, then the relation is a table, which is a subset of A D1⊕D2⊕…⊕Dn B D1xD2x…xDn […]

Question 758 If an SQl query involves NOT,AND,OR with no parenthesis A NOT will be evaluated first; AND will be evaluated second;OR will be evaluated last […]

Question 760 In tuple relational calculus P1 → p2 is equivalent to A ~P1 V P2 B P1 V p2 C P1 ⋀ P2 D P1 […]

Question 761 Considering relational database, functional dependency between two attributes A and B is denoted by: A A–> B B B<– A C AB–> R D […]