From R Natural Outer Join S; is:
A. 2
B. 4
C. 6
D. None of the mentioned
Answer:A
From R Natural Outer Join S; is:
A. 2 B. 4 C. 6 D. None of the mentioned
Explanation:The SQL NATURAL JOIN is a type of EQUI JOIN and is structured in such a way that, columns with same name of associate tables will appear once only. 9. Suppose now that R(A,B) and S(A,B) are two relations with r and s tuples, respectively (again, not necessarily distinct). If m is the number of (not necessarily distinct) tuples in the result of the SQL query: