Oracle 1Z0-171 : Oracle Database 23ai SQL Associate
- Exam Code: 1Z0-171
- Exam Name: Oracle Database 23ai SQL Associate
- Updated: Oct 11, 2026
- Q & A: 111 Questions and Answers
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Oracle 1Z0-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Controlling User Access | 5% | - Roles creation and privilege assignment - System vs object privileges - Granting privileges on tables |
| Topic 2: Relational Database Concepts | 5% | - Relationship between database and SQL - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects |
| Topic 3: Retrieving and Sorting Data | 15% | - Using SELECT statement and column aliases - Operators, literals, DISTINCT keyword - Limiting rows and substitution variables - Arithmetic expressions and NULL values - Sorting query results - Operator precedence rules - DEFINE and VERIFY commands |
| Topic 4: Using SET Operators | 5% | - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations - Matching SELECT statements |
| Topic 5: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage sequences - Create and manage synonyms |
| Topic 6: DDL for Tables and Relationships | 15% | - Views management - CREATE TABLE statement - Table structure, columns, data types - TRUNCATE TABLE statement - Temporary and external tables - Drop columns, set unused columns - Constraints management |
| Topic 7: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 8: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 9: Using Functions | 25% | - Restricting group results - Character functions for string manipulation - NVL, NULLIF, COALESCE functions - Group functions and grouping data - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Nested functions - Date arithmetic and date functions - Data type conversion: implicit and explicit - ROUND, TRUNC, MOD functions |
| Topic 10: Data Dictionary and Time Zones | 5% | - Using data dictionary views - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
| Topic 11: Managing Tables with DML | 5% | - Transaction management and control - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements |
Oracle Database 23ai SQL Associate Sample Questions:
Which of the following best describes a relational database?
- A. A database where all data is stored as key-value pairs
- B. A flat file system with no defined relationships between data
- C. A database that uses a tabular structure with rows and columns to represent relationships between data entities
- D. A database that organizes data hierarchically
Correct Answer: C š³ļø
Which SQL clause is used to specify the source table in a query?
- A. GROUP BY
- B. WHERE
- C. SELECT
- D. FROM
Correct Answer: D š³ļø
What does the INTERSECT operator do in SQL?
- A. Combines all rows from two queries without any conditions
- B. Combines rows from two queries and includes all duplicates
- C. Returns rows that are present in both queries
- D. Returns rows from the first query that are not present in the second query
Correct Answer: C š³ļø
What will the following SQL statement output?
SELECT first_name || ' ' || last_name AS full_name FROM employees;
- A. Concatenated first and last names without spaces
- B. Only the first names of employees
- C. A syntax error
- D. Concatenated first and last names with spaces in between
Correct Answer: D š³ļø
What happens when the TRUNCATE TABLE statement is executed?
- A. Deletes all rows in the table and logs the operation for rollback
- B. Deletes all rows in the table without logging the operation for rollback
- C. Deletes only the last row in the table
- D. Deletes the table structure permanently
Correct Answer: B š³ļø
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