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Oracle 1Z1-171 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Using DML Statements | - Control transactions - Delete rows from a table - Use the MERGE statement - Update rows in a table - Insert rows into a table |
| Using SQL Functions | - Use conversion functions - Use character, number, and date functions in SELECT statements |
| Using Subqueries | - Use correlated subqueries - Use multiple-row subqueries - Use single-row subqueries |
| Controlling User Access | - Differentiate system privileges from object privileges - Create and manage roles - Grant and revoke privileges |
| Using SELECT Statements | - Use the FETCH clause to limit rows returned - Use the ORDER BY clause to sort rows - Execute a basic SELECT statement - Use the WHERE clause to restrict rows |
| Using Joins | - Use self-joins - Use equijoins and non-equijoins - Use cross joins - Use outer joins (LEFT, RIGHT, FULL) |
| Using Set Operators | - Use UNION, UNION ALL, INTERSECT, and MINUS operators |
| Using DDL Statements | - Create and manage sequences - Create and manage tables - Create and manage constraints - Create and manage indexes - Create and manage views |
Oracle Database 23ai SQL Associate Sample Questions:
1. How are NULL values treated in relational databases?
A) NULL values are not allowed in relational databases.
B) NULL values are treated as zero.
C) NULL values represent missing or unknown data.
D) NULL values are treated as empty strings.
2. Which statement can be used to undo changes made in a transaction?
A) COMMIT
B) MERGE
C) SAVEPOINT
D) ROLLBACK
3. What does the following query return?
SELECT employee_id
FROM employees
WHERE department_id IN (SELECT department_id FROM departments WHERE location_id = 1000);
A) Employees with no department
B) Employees working in location ID 1000
C) Departments located in location ID 1000
D) Employees with salaries greater than 1000
4. What is the result of the following SQL query?
SELECT COALESCE(NULL, 100, 200) AS result FROM dual;
A) NULL
B) 300
C) 100
D) 200
5. Which clause in an UPDATE statement typically uses a subquery to assign values to columns?
A) SET
B) FROM
C) HAVING
D) WHERE
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: D | Question # 3 Answer: B | Question # 4 Answer: C | Question # 5 Answer: A |
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