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Last Updated: Sep 16, 2026
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Oracle 1Z0-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements - Transaction management and control |
| Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relationship between database and SQL - Relational database theoretical and physical aspects |
| Controlling User Access | 5% | - Granting privileges on tables - Roles creation and privilege assignment - System vs object privileges |
| DDL for Tables and Relationships | 15% | - TRUNCATE TABLE statement - Drop columns, set unused columns - Views management - CREATE TABLE statement - Temporary and external tables - Table structure, columns, data types - Constraints management |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage sequences - Create and manage synonyms |
| Data Dictionary and Time Zones | 5% | - Using data dictionary views - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
| Retrieving and Sorting Data | 15% | - DEFINE and VERIFY commands - Sorting query results - Operators, literals, DISTINCT keyword - Operator precedence rules - Arithmetic expressions and NULL values - Using SELECT statement and column aliases - Limiting rows and substitution variables |
| Using Functions | 25% | - ROUND, TRUNC, MOD functions - Date arithmetic and date functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Nested functions - Restricting group results - NVL, NULLIF, COALESCE functions - Character functions for string manipulation - Data type conversion: implicit and explicit - Group functions and grouping data |
| Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Using SET Operators | 5% | - Matching SELECT statements - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators |
Oracle Database 23ai SQL Associate Sample Questions:
Which of the following data dictionary views provides information about constraints on tables?
- A. ALL_CONSTRAINTS
- B. DBA_CONSTRAINTS
- C. All of the above
- D. USER_CONSTRAINTS
Correct Answer: C 🗳️
What does the following query return?
SELECT ROUND(123.456, 1) AS rounded_value FROM dual;
- A. 123.5
- B. 124
- C. 123.4
- D. 123.45
Correct Answer: A 🗳️
How are NULL values treated in relational databases?
- A. NULL values are treated as empty strings.
- B. NULL values are treated as zero.
- C. NULL values represent missing or unknown data.
- D. NULL values are not allowed in relational databases.
Correct Answer: C 🗳️
How can a synonym benefit database design?
- A. It improves query execution time.
- B. It enforces constraints on table columns.
- C. It allows the renaming of columns in a table.
- D. It provides a consistent reference to database objects, even if their underlying names change.
Correct Answer: D 🗳️
What is a subquery in SQL?
- A. A query used to create a table
- B. A query that combines data from multiple tables
- C. A query used for joining two or more tables
- D. A query inside another query
Correct Answer: D 🗳️
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