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Oracle 1Z1-171 Exam Syllabus Topics:

Oracle Database 23ai SQL Associate Sample Questions:

Question 1

What is the difference between UNION and UNION ALL?

A. UNION combines columns, while UNION ALL combines rows.
B. UNION removes duplicates, while UNION ALL includes all rows, including duplicates.
C. UNION includes all rows, while UNION ALL removes duplicates.
D. UNION works with subqueries, while UNION ALL does not.

Question 2

Which command revokes a user's privilege to update a table?

A. DELETE UPDATE ON table_name FROM user_name;
B. REMOVE UPDATE ON table_name FROM user_name;
C. DENY UPDATE ON table_name FROM user_name;
D. REVOKE UPDATE ON table_name FROM user_name;

Question 3

What is a SELF JOIN in SQL?

A. A join of a table with itself
B. A join between tables with identical structures
C. A join that does not require a WHERE clause
D. A join used for Cartesian products

Question 4

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

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

Question 5

What happens when a temporary table is created in Oracle Database?

A. It is permanently stored in the database.
B. It cannot have any constraints.
C. It is created for the duration of a user session or transaction.
D. It is stored in external files.

Solutions: