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Oracle 1Z1-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Transaction management and control - Multi-table INSERT and MERGE statements |
| Topic 2: Using Functions | 25% | - NVL, NULLIF, COALESCE functions - ROUND, TRUNC, MOD functions - Character functions for string manipulation - Restricting group results - Date arithmetic and date functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Nested functions - Group functions and grouping data - Data type conversion: implicit and explicit |
| Topic 3: DDL for Tables and Relationships | 15% | - CREATE TABLE statement - Views management - Constraints management - Table structure, columns, data types - TRUNCATE TABLE statement - Drop columns, set unused columns - Temporary and external tables |
| Topic 4: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 5: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| Topic 6: Controlling User Access | 5% | - Granting privileges on tables - System vs object privileges - Roles creation and privilege assignment |
| Topic 7: Data Dictionary and Time Zones | 5% | - Using data dictionary views - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
| Topic 8: Retrieving and Sorting Data | 15% | - Operators, literals, DISTINCT keyword - Sorting query results - Arithmetic expressions and NULL values - Limiting rows and substitution variables - Operator precedence rules - DEFINE and VERIFY commands - Using SELECT statement and column aliases |
| Topic 9: Using SET Operators | 5% | - Using ORDER BY with set operations - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators |
| Topic 10: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 11: Relational Database Concepts | 5% | - Relationship between database and SQL - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components |
Oracle Database 23ai SQL Associate Sample Questions:
1. Which of the following SET operators combines results from two queries and removes duplicates?
A) UNION
B) MINUS
C) UNION ALL
D) INTERSECT
2. What happens when the maximum value of a sequence is reached?
A) The sequence stops generating values.
B) An error is raised, and the sequence must be recreated.
C) The sequence resets to the starting value if the CYCLE option is specified.
D) The sequence starts decrementing values.
3. How are NULL values treated in relational databases?
A) NULL values are treated as empty strings.
B) NULL values are not allowed in relational databases.
C) NULL values are treated as zero.
D) NULL values represent missing or unknown data.
4. Which of the following data dictionary views provides information about constraints on tables?
A) ALL_CONSTRAINTS
B) DBA_CONSTRAINTS
C) USER_CONSTRAINTS
D) All of the above
5. What does the following SQL query return?
SELECT employee_id, salary * 12 AS annual_salary FROM employees;
A) Employee IDs and their annual salaries
B) Monthly salaries of all employees
C) Only employees with salaries greater than 12
D) Salaries multiplied by 12 and stored in a new table
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: C | Question # 3 Answer: D | Question # 4 Answer: D | Question # 5 Answer: A |
