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Instant Download Oracle : 1Z1-171 Questions & Answers as PDF & Test Engine
- Exam Code: 1Z1-171
- Exam Name: Oracle Database 23ai SQL Associate
- Updated: Aug 21, 2026
- No. of Questions: 111 Questions and Answers
- Download Limit: Unlimited
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Oracle 1Z1-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 2: DDL for Tables and Relationships | 15% | - Views management - CREATE TABLE statement - Temporary and external tables - Table structure, columns, data types - TRUNCATE TABLE statement - Drop columns, set unused columns - Constraints management |
| Topic 3: Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views - INTERVAL data types |
| Topic 4: Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements - Transaction management and control |
| Topic 5: Retrieving and Sorting Data | 15% | - Sorting query results - DEFINE and VERIFY commands - Operator precedence rules - Limiting rows and substitution variables - Operators, literals, DISTINCT keyword - Arithmetic expressions and NULL values - Using SELECT statement and column aliases |
| Topic 6: Relational Database Concepts | 5% | - Relationship between database and SQL - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects |
| Topic 7: Controlling User Access | 5% | - Roles creation and privilege assignment - System vs object privileges - Granting privileges on tables |
| Topic 8: Using Functions | 25% | - Character functions for string manipulation - NVL, NULLIF, COALESCE functions - Date arithmetic and date functions - Group functions and grouping data - ROUND, TRUNC, MOD functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Restricting group results - Nested functions - Data type conversion: implicit and explicit |
| Topic 9: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| Topic 10: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 11: Using SET Operators | 5% | - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations |
Oracle Database 23ai SQL Associate Sample Questions:
1. What is a SELF JOIN in SQL?
A) A join that does not require a WHERE clause
B) A join of a table with itself
C) A join used for Cartesian products
D) A join between tables with identical structures
2. Which function returns the current system date and time in the database session's time zone?
A) LOCAL_TIME
B) SYSTEM_TIME
C) CURRENT_TIMESTAMP
D) SYSDATE
3. 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;
4. Which of the following is a valid reason to create a synonym?
A) To enforce unique constraints on a table
B) To improve query performance
C) To provide simplified and consistent access to an object
D) To automatically generate numeric values for a column
5. 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.
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: C | Question # 3 Answer: C | Question # 4 Answer: C | Question # 5 Answer: B |
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