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Oracle 1Z0-171 Exam Syllabus Topics:

Oracle Database 23ai SQL Associate Sample Questions:

1. What does the following SQL statement do?
SELECT e.employee_id, d.department_name
FROM employees e
JOIN departments d ON e.department_id = d.department_id;

A) Retrieves only departments with no employees
B) Retrieves all employees and their departments
C) Retrieves employees and departments with matching department_id
D) Retrieves only employees without departments

2. What type of join does the following query perform?
SELECT *
FROM employees e, departments d
WHERE e.department_id = d.department_id;

A) CROSS JOIN
B) NATURAL JOIN
C) OUTER JOIN
D) EQUI JOIN

3. What is the purpose of the SAVEPOINT statement?

A) To delete data temporarily
B) To restart a transaction
C) To set a point within a transaction to which a rollback can occur
D) To save changes permanently

4. What is the result of the following query?
SELECT employee_id
FROM employees
WHERE EXISTS (SELECT 1 FROM departments WHERE department_id = 10);

A) Employee IDs from departments with no employees
B) All employee IDs
C) Employee IDs from department 10
D) Employees with salaries greater than 10

5. What happens when the TRUNCATE TABLE statement is executed?

A) Deletes only the last row in the table
B) Deletes the table structure permanently
C) Deletes all rows in the table without logging the operation for rollback
D) Deletes all rows in the table and logs the operation for rollback

Solutions: