Question

Natural join when there is no common attributes SELECT studentId, uosCode FROM Student NATURAL JOIN UnitOfStudy;

Option 1: INNER JOIN
Option 2: LEFT OUTER JOIN
Option 3: RIGHT OUTER JOIN
Option 4: FULL OUTER JOIN

Answer 1

The natural join in this case is a FULL OUTER JOIN.

Step-by-step explanation:

The correct answer is Option 4: FULL OUTER JOIN.

In a natural join, the common attributes between the tables are used to combine the rows. However, in this case, there are no common attributes between the 'Student' and 'UnitOfStudy' tables. A full outer join will include all records from both tables, with NULL values for the non-matching attributes.

For example, if the 'Student' table has records with studentId and the 'UnitOfStudy' table has records with uosCode, a full outer join will return all combinations of studentId and uosCode, even if they don't have a match in the other table.