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Oracle 1Z0-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Data Dictionary and Time Zones | 5% | - INTERVAL data types - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
| Topic 2: DDL for Tables and Relationships | 15% | - TRUNCATE TABLE statement - Constraints management - Views management - Table structure, columns, data types - CREATE TABLE statement - Temporary and external tables - Drop columns, set unused columns |
| Topic 3: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 4: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 5: Using Functions | 25% | - Character functions for string manipulation - Group functions and grouping data - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Date arithmetic and date functions - Restricting group results - Data type conversion: implicit and explicit - Nested functions - NVL, NULLIF, COALESCE functions - ROUND, TRUNC, MOD functions |
| Topic 6: Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - Relationship between database and SQL - SQL SELECT clauses and ERD components |
| Topic 7: Retrieving and Sorting Data | 15% | - Operator precedence rules - Operators, literals, DISTINCT keyword - Using SELECT statement and column aliases - Limiting rows and substitution variables - DEFINE and VERIFY commands - Arithmetic expressions and NULL values - Sorting query results |
| Topic 8: Controlling User Access | 5% | - System vs object privileges - Granting privileges on tables - Roles creation and privilege assignment |
| Topic 9: Using SET Operators | 5% | - UNION, UNION ALL, INTERSECT, MINUS operators - Matching SELECT statements - Using ORDER BY with set operations |
| Topic 10: Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - Transaction management and control - INSERT, UPDATE, DELETE operations |
| Topic 11: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage indexes - Create and manage sequences |
Oracle Database 23ai SQL Associate Sample Questions:
1. Which of the following can be achieved using a correlated subquery?
A) Inserting data into a table
B) Retrieving duplicate records from a single table
C) Comparing each employee's salary to the average salary of their department
D) Joining two tables without a common column
2. What is the output of the following query?
SELECT CURRENT_DATE FROM dual;
A) The current date in the session time zone
B) The current date and time in the database time zone
C) The current date in the database time zone
D) The current date and time in UTC
3. What is the primary purpose of an index in SQL?
A) To enforce data integrity constraints
B) To ensure uniqueness of values in a column
C) To store metadata about a table
D) To improve the performance of data retrieval queries
4. What does the following SQL statement do?
SELECT e.employee_id, d.department_name
FROM employees e
JOIN departments d ON e.department_id = d.department_id;
A) Retrieves employees and departments with matching department_id
B) Retrieves all employees and their departments
C) Retrieves only departments with no employees
D) Retrieves only employees without departments
5. Which of the following is an example of an object privilege?
A) DROP DATABASE
B) SELECT ON table_name
C) ALTER USER
D) CREATE TABLE
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: A | Question # 3 Answer: D | Question # 4 Answer: A | Question # 5 Answer: B |
