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Oracle 1Z0-171 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Relational Database Concepts | - Database fundamentals and relational model
|
| Advanced SQL Features | - Set operators and functions
|
| Data Manipulation Language (DML) | - Insert, Update, Delete operations
|
| Data Definition Language (DDL) | - Schema objects
|
| Retrieving Data Using SQL | - Joins and Subqueries
|
Oracle Database 23ai SQL Associate Sample Questions:
What is the purpose of a correlated subquery?
- A. A subquery that depends on the result of another subquery
- B. A subquery that can be used only with aggregate functions
- C. A subquery that combines data from multiple tables
- D. A subquery that references columns from the outer query
Correct Answer: D 🗳️
Which type of subquery returns exactly one value?
- A. Scalar subquery
- B. Correlated subquery
- C. Inline view
- D. Multiple-row subquery
Correct Answer: A 🗳️
What is the difference between UNION and UNION ALL?
- A. UNION works with subqueries, while UNION ALL does not.
- B. UNION combines columns, while UNION ALL combines rows.
- C. UNION removes duplicates, while UNION ALL includes all rows, including duplicates.
- D. UNION includes all rows, while UNION ALL removes duplicates.
Correct Answer: C 🗳️
What is the primary purpose of granting privileges in Oracle Database?
- A. To create new tables and indexes
- B. To define the structure of database tables
- C. To increase query performance
- D. To control user access to database objects and operations
Correct Answer: D 🗳️
Which of the following statements creates an ascending sequence starting at 100 and incrementing by 10?
- A. CREATE SEQUENCE seq_1 START WITH 100 INCREMENT BY -10;
- B. CREATE SEQUENCE seq_1 START WITH 10 INCREMENT BY 100;
- C. CREATE SEQUENCE seq_1 START WITH 100 INCREMENT BY 10;
- D. CREATE SEQUENCE seq_1 START WITH 10 INCREMENT BY -100;
Correct Answer: C 🗳️
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