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Oracle 1Z1-171 Exam Syllabus Topics:

Oracle Database 23ai SQL Associate Sample Questions:

1. What does the following SQL query return?
SELECT employee_id, salary * 12 AS annual_salary FROM employees;

A) Monthly salaries of all employees
B) Employee IDs and their annual salaries
C) Only employees with salaries greater than 12
D) Salaries multiplied by 12 and stored in a new table

2. Which clause in an UPDATE statement typically uses a subquery to assign values to columns?

A) SET
B) WHERE
C) FROM
D) HAVING

3. How can a synonym benefit database design?

A) It allows the renaming of columns in a table.
B) It improves query execution time.
C) It provides a consistent reference to database objects, even if their underlying names change.
D) It enforces constraints on table columns.

4. What is required for the queries combined by a SET operator to work correctly?

A) The tables must be joined using a primary key.
B) Both queries must include the WHERE clause.
C) The result sets must have the same number of columns and compatible data types.
D) Both queries must use the GROUP BY clause.

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

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

Solutions: