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Oracle 1Z0-171 Exam Syllabus Topics:

Oracle Database 23ai SQL Associate Sample Questions:

Question 1

What will the following query result in?
SELECT e.employee_id, e.manager_id
FROM employees e
WHERE e.manager_id IS NOT NULL;

A. Employees who do not have managers
B. Employees who have managers
C. Employees and their managers' IDs
D. All employees and their IDs

Question 2

The column data type is converted to a primary key.

A. CREATE SEQUENCE
B. CREATE INDEX
C. CREATE ALIAS
D. CREATE SYNONYM

Question 3

What will the following query do?
DELETE FROM employees
WHERE department_id = 20;

A. Raise an error because DELETE cannot use a WHERE clause
B. Delete all rows in the employees table
C. Delete all rows where department_id is 20
D. Delete the department_id column in the employees table

Question 4

Which statement can be used to undo changes made in a transaction?

A. COMMIT
B. MERGE
C. ROLLBACK
D. SAVEPOINT

Question 5

Which SQL clause can be used in Oracle to limit the number of rows returned?

A. DISTINCT
B. FETCH FIRST n ROWS ONLY
C. GROUP BY
D. WHERE

Solutions: