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Oracle 1Z0-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage indexes - Create and manage synonyms |
| Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Controlling User Access | 5% | - Granting privileges on tables - Roles creation and privilege assignment - System vs object privileges |
| Relational Database Concepts | 5% | - Relationship between database and SQL - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects |
| Retrieving and Sorting Data | 15% | - Sorting query results - Using SELECT statement and column aliases - Limiting rows and substitution variables - Operator precedence rules - DEFINE and VERIFY commands - Operators, literals, DISTINCT keyword - Arithmetic expressions and NULL values |
| DDL for Tables and Relationships | 15% | - CREATE TABLE statement - Temporary and external tables - TRUNCATE TABLE statement - Drop columns, set unused columns - Constraints management - Table structure, columns, data types - Views management |
| Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements - Transaction management and control |
| Using Functions | 25% | - NVL, NULLIF, COALESCE functions - Restricting group results - ROUND, TRUNC, MOD functions - Group functions and grouping data - Date arithmetic and date functions - Nested functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Character functions for string manipulation - Data type conversion: implicit and explicit |
| Using SET Operators | 5% | - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators - Matching SELECT statements |
| Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views - INTERVAL data types |
Oracle Database 23ai SQL Associate Sample Questions:
Question 1
Which of the following statements is true about constraints in Oracle Database?
A. Constraints cannot reference other tables.
B. Constraints can be added or modified using the ALTER TABLE statement.
C. Constraints can only be added when creating a table.
D. Constraints are automatically dropped when rows are deleted.
Question 2
What is the purpose of the DBA_OBJECTS data dictionary view?
A. To list all users in the database
B. To provide information about all objects in the database
C. To monitor system performance
D. To show the current session details
Question 3
What is the output of the following query?
SELECT CURRENT_DATE FROM dual;
A. The current date and time in UTC
B. The current date in the session time zone
C. The current date in the database time zone
D. The current date and time in the database time zone
Question 4
What does the INTERSECT operator do in SQL?
A. Combines rows from two queries and includes all duplicates
B. Returns rows from the first query that are not present in the second query
C. Returns rows that are present in both queries
D. Combines all rows from two queries without any conditions
Question 5
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 all employees and their departments
B. Retrieves employees and departments with matching department_id
C. Retrieves only departments with no employees
D. Retrieves only employees without departments
Solutions:
| Question 1 Answer: B | Question 2 Answer: B | Question 3 Answer: B | Question 4 Answer: C | Question 5 Answer: B |
Jim 
Maximilian 
Brandon 
Heloise 
Zara 
Aldrich 
Benedict 
Rock 
Maximilian 
Rod 
Griffith 
Trista 
Monroe 
Howar 
