Explanation:Domain and Tuple relational calculus are non-procedural language.Query language is a method through which the database entries can be accessed. 4. The_____ operation allows the combining of two relations by merging pairs of tuples, one from each relation, into a single tuple.
A. Select
B. Join
C. Union
D. Intersection
Answer:A
Explanation:Domain and Tuple relational calculus are non-procedural language.Query language is a method through which the database entries can be accessed. 4. The_____ operation allows the combining of two relations by merging pairs of tuples, one from each relation, into a single tuple.
A. Select B. Join C. Union D. Intersection