Explanation:A Cartesian coordinate system is a coordinate system that specifies each point uniquely in a plane by a pair of numerical coordinates. 7. Which is a join condition contains an equality operator:
A. Equijoins
B. Cartesian
C. Both and b
D. None of the mentioned
Answer:A
Explanation:A Cartesian coordinate system is a coordinate system that specifies each point uniquely in a plane by a pair of numerical coordinates. 7. Which is a join condition contains an equality operator:
A. Equijoins B. Cartesian C. Both and b D. None of the mentioned
Explanation:An equi-join is a specific type of comparator-based join, that uses only equality comparisons in the join-predicate. 8. Which join refers to join records from the write table that have no matching key in the left table are include in the result set: