When two or more tables share the same number of columns, and when their corresponding columns share the same or compatible domains, they are said to be _____.
A) intersect-compatible
B) union-compatible
C) difference-compatible
D) select-compatible

Question

Quizplus · Accepted Answer

Tables that share the same number of columns and have corresponding columns with the same or compatible domains are said to be union-compatible. This means that the tables can be combined using a union operation, where the resulting table will have all rows from both tables without any duplicates. The other options (intersect-compatible, difference-compatible, and select-compatible) do not fit the given criteria.

When Two or More Tables Share the Same Number of Columns