Explore topic-wise MCQs in Technical MCQs.

This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Technical MCQs knowledge and support exam preparation. Choose a topic below to get started.

1.

SELECT e.EMPLOYEE_ID,e.LAST_NAME,e.DEPARTMENT_ID, d.DEPARTMENT_NAMEFROM EMP e, DEPARTMENT d WHERE e.DEPARTMENT_ID = d.DEPARTMENT_ID;18.A SELECT statement can be used to perform these three functions: - Choose rows from a table. - Choose columns from a table. - Bring together data that is stored in different tables by creating a link between them.Which set of keywords describes these capabilities?

A. difference, projection, join
B. selection, projection, join
C. Selection, intersection, join
D. Intersection, projection, join
E.
Answer» C. Selection, intersection, join
Discussion
2.

SELECT CUSTOMER_T. CUSTOMER_ID, ORDER_T. CUSTOMER_ID, NAME, ORDER_ID FROM CUSTOMER_T,ORDER_T17.Evaluate this SQL statement: In the statement, which capabilities of a SELECT statement are performed?

A. Selection, projection, join
B. Difference, projection, join
C. Selection, intersection, join
D. Intersection, projection, join
Answer» B. Difference, projection, join
Discussion
3.

SELECT CUSTOMER_T. CUSTOMER_ID, ORDER_T. CUSTOMER_ID, NAME, ORDER_ID FROM CUSTOMER_T,ORDER_T WHERE CUSTOMER_T. CUSTOMER_ID = ORDER_T. CUSTOMER_ID16.The following SQL is which type of join?

A. Equi-join
B. Natural join
C. Outer join
D. Cartesian join
Answer» E.
Discussion
4.

The following SQL is which type of join?

A. Equi-join
B. Natural join
C. Outer join
D. Cartesian join
Answer» B. Natural join
Discussion
5.

Which of the following statement is TRUE about FULL OUTER JOIN created on two tables Table1 and Table2?

A. Retrieves all the unmatched rows of Table1
B. Retrieves all the unmatched rows of Table2
C. Retrieves both matched and unmatched rows of Table1 and Table2
D. Retrieves only matched rows of table1 and Table2
Answer» D. Retrieves only matched rows of table1 and Table2
Discussion
6.

A_____ is a query that retrieves rows from more than one table or view

A. Start
B. End
C. Join
D. All of the above
Answer» D. All of the above
Discussion