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Oracle 1Z1-171 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Relational Database Concepts | - Database fundamentals and relational model
|
| Data Definition Language (DDL) | - Schema objects
|
| Advanced SQL Features | - Aggregations and grouping
|
| Data Manipulation Language (DML) | - Insert, Update, Delete operations
|
| Retrieving Data Using SQL | - SELECT statements
|
Oracle Database 23ai SQL Associate Sample Questions:
How are NULL values treated in relational databases?
- A. NULL values are not allowed in relational databases.
- B. NULL values are treated as zero.
- C. NULL values represent missing or unknown data.
- D. NULL values are treated as empty strings.
Correct Answer: C 🗳️
Which of the following SET operators combines results from two queries and removes duplicates?
- A. MINUS
- B. INTERSECT
- C. UNION
- D. UNION ALL
Correct Answer: C 🗳️
How is the LOCALTIMESTAMP function different from CURRENT_TIMESTAMP?
- A. Both functions are identical in output.
- B. LOCALTIMESTAMP does not include fractional seconds, while CURRENT_TIMESTAMP does.
- C. LOCALTIMESTAMP returns only the date, while CURRENT_TIMESTAMP returns the date and time.
- D. LOCALTIMESTAMP omits time zone information, while CURRENT_TIMESTAMP includes it.
Correct Answer: D 🗳️
Which of the following ensures that a relational database enforces data integrity?
- A. Constraints such as primary keys, foreign keys, and unique constraints
- B. Indexes on all columns
- C. Hierarchical data organization
- D. Redundant data storage
Correct Answer: A 🗳️
What is the result of the following query?
SELECT employee_id
FROM employees
WHERE EXISTS (SELECT 1 FROM departments WHERE department_id = 10);
- A. Employees with salaries greater than 10
- B. Employee IDs from department 10
- C. All employee IDs
- D. Employee IDs from departments with no employees
Correct Answer: C 🗳️



