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Oracle 1Z0-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Using Functions | 25% | - ROUND, TRUNC, MOD functions - Group functions and grouping data - NVL, NULLIF, COALESCE functions - Nested functions - Restricting group results - Data type conversion: implicit and explicit - Character functions for string manipulation - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Date arithmetic and date functions |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage sequences - Create and manage synonyms |
| Retrieving and Sorting Data | 15% | - Limiting rows and substitution variables - Operators, literals, DISTINCT keyword - Arithmetic expressions and NULL values - Sorting query results - Operator precedence rules - Using SELECT statement and column aliases - DEFINE and VERIFY commands |
| Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Controlling User Access | 5% | - Roles creation and privilege assignment - Granting privileges on tables - System vs object privileges |
| Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations - Transaction management and control |
| Data Dictionary and Time Zones | 5% | - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types |
| Using SET Operators | 5% | - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations - Matching SELECT statements |
| DDL for Tables and Relationships | 15% | - Temporary and external tables - TRUNCATE TABLE statement - Constraints management - Table structure, columns, data types - Views management - Drop columns, set unused columns - CREATE TABLE statement |
| Relational Database Concepts | 5% | - Relationship between database and SQL - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects |
Oracle Database 23ai SQL Associate Sample Questions:
Question 1
What is the primary purpose of a primary key in a relational database?
A. To establish relationships between tables
B. To store duplicate data in a table
C. To sort data in ascending order
D. To uniquely identify each record in a table
Question 2
What does the UNION ALL operation do when selecting matching columns from different tables?
SELECT employee_id, salary FROM employees
UNION ALL
SELECT employee_id, bonus FROM bonuses;
A. Combines the salaries and bonuses for employees, removing duplicates
B. Returns only the employees with salaries and bonuses
C. Returns only employees with duplicate employee IDs in both tables
D. Combines all employee IDs, salaries, and bonuses, including duplicates
Question 3
What happens if a privilege is revoked from a user who has granted the same privilege to others?
A. The privilege cannot be revoked in this scenario.
B. The privilege is retained by the other users.
C. The privilege is transferred to another user.
D. The privilege is revoked from all other users.
Question 4
Which function is used to extract the year from a date in SQL?
A. YEAR(date)
B. EXTRACT(YEAR FROM date)
C. TO_YEAR(date)
D. GET_YEAR(date)
Question 5
What is the purpose of using external tables in Oracle Database?
A. To store backup copies of database tables
B. To create temporary tables for session-specific data
C. To improve the performance of complex queries
D. To manage data stored in external files using SQL
Solutions:
| Question 1 Answer: D | Question 2 Answer: D | Question 3 Answer: D | Question 4 Answer: B | Question 5 Answer: D |
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