Evaluate this SQL statement: SELECT e.EMPLOYEE_ID,e.LAST_NAME,e.DEPARTMENT_ID, d.DEPARTMENT_NAME FROM EMP e, DEPARTMENT d WHERE e.DEPARTMENT_ID = d.DEPARTMENT_ID; In the statement, which…

The correct answer is A. Selection, projection, join. Selection, projection and join capabilities of a SELECT statement are performed in this view. Incorrect Answers B: Selection is performed in this query, not difference. There is no capability with name difference for a SELECT statement exists. C: There is no intersection in…

Displaying Data from Multiple Tables and Subqueries

Question

Evaluate this SQL statement:

SELECT e.EMPLOYEE_ID,e.LAST_NAME,e.DEPARTMENT_ID, d.DEPARTMENT_NAME FROM EMP e, DEPARTMENT d WHERE e.DEPARTMENT_ID = d.DEPARTMENT_ID; In the statement, which capabilities of a SELECT statement are performed?

Options

ASelection, projection, join
BDifference, projection, join
CSelection, intersection, join
DIntersection, projection, join
EDifference, projection, product

How the community answered

(26 responses)

A
81% (21)
C
8% (2)
D
4% (1)
E
8% (2)

Explanation

Selection, projection and join capabilities of a SELECT statement are performed in this view. Incorrect Answers B: Selection is performed in this query, not difference. There is no capability with name difference for a SELECT statement exists. C: There is no intersection in this SELECT statement used. D: There is no intersection in this SELECT statement used. E: There is no difference or product capabilities exist for a SELECT statement.

Topics

#selection#projection#join#SELECT capabilities

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