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Oracle 1Z1-171 Exam Syllabus Topics:

Oracle Database 23ai SQL Associate Sample Questions:

1. What is the purpose of the DBA_OBJECTS data dictionary view?

A) To monitor system performance
B) To show the current session details
C) To list all users in the database
D) To provide information about all objects in the database

2. What will the following query do?
SELECT employee_id, salary
FROM employees
WHERE salary > (SELECT AVG(salary) FROM employees);

A) Return employees with a salary above the average salary
B) Return employees with a salary equal to the average salary
C) Return employees with a salary below the average salary
D) Return all employees and their salaries

3. Which type of join retrieves only the rows with matching values in both tables?

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

4. Which SQL function can be used to replace NULL values with a specified value?

A) NVL
B) REPLACE
C) ISNULL
D) COALESCE

5. What is the default order of evaluation when multiple SET operators are used in a query?

A) INTERSECT, MINUS, UNION
B) UNION, MINUS, INTERSECT
C) INTERSECT, UNION, MINUS
D) UNION, INTERSECT, MINUS

Solutions: