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Oracle 1Z0-171 Exam Syllabus Topics:

Oracle Database 23ai SQL Associate Sample Questions:

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

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

2. Which data dictionary view lists all indexes created by the current user?

A) USER_INDEXES
B) DBA_INDEXES
C) ALL_INDEXES
D) INDEX_LIST

3. Which clause can be used with SET operators to sort the final result set?

A) WHERE
B) GROUP BY
C) HAVING
D) ORDER BY

4. How are NULL values treated in relational databases?

A) NULL values are not allowed in relational databases.
B) NULL values represent missing or unknown data.
C) NULL values are treated as zero.
D) NULL values are treated as empty strings.

5. What will the following SQL query do?
UPDATE employees
SET salary = salary * 1.1
WHERE department_id = 10;

A) Increase the salary of all employees by 10%
B) Decrease the salary of employees in department 10 by 10%
C) Increase the salary of employees in department 10 by 10%
D) Set the salary to 1.1 for employees in department 10

Solutions: