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Oracle 1Z1-171 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Controlling User Access | - Grant and revoke privileges - Create and manage roles - Differentiate system privileges from object privileges |
| Using Set Operators | - Use UNION, UNION ALL, INTERSECT, and MINUS operators |
| Using DML Statements | - Control transactions - Delete rows from a table - Insert rows into a table - Update rows in a table - Use the MERGE statement |
| Using SQL Functions | - Use character, number, and date functions in SELECT statements - Use conversion functions |
| Using Joins | - Use outer joins (LEFT, RIGHT, FULL) - Use equijoins and non-equijoins - Use cross joins - Use self-joins |
| Using DDL Statements | - Create and manage sequences - Create and manage tables - Create and manage constraints - Create and manage indexes - Create and manage views |
| Using SELECT Statements | - Use the ORDER BY clause to sort rows - Use the WHERE clause to restrict rows - Use the FETCH clause to limit rows returned - Execute a basic SELECT statement |
| Using Subqueries | - Use correlated subqueries - Use single-row subqueries - Use multiple-row subqueries |
Oracle Database 23ai SQL Associate Sample Questions:
1. What is the purpose of the SAVEPOINT statement?
A) To save changes permanently
B) To restart a transaction
C) To set a point within a transaction to which a rollback can occur
D) To delete data temporarily
2. Which type of join returns all rows from the left table, even if there are no matches in the right table?
A) INNER JOIN
B) LEFT OUTER JOIN
C) FULL OUTER JOIN
D) RIGHT OUTER JOIN
3. Which SQL clause can be used in Oracle to limit the number of rows returned?
A) DISTINCT
B) WHERE
C) GROUP BY
D) FETCH FIRST n ROWS ONLY
4. 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) Returns only the employees with salaries and bonuses
B) Returns only employees with duplicate employee IDs in both tables
C) Combines the salaries and bonuses for employees, removing duplicates
D) Combines all employee IDs, salaries, and bonuses, including duplicates
5. Which SQL function converts a string representation of a date into a date data type?
A) DATE_CONVERT
B) CONVERT_TO_DATE
C) CAST_TO_DATE
D) TO_DATE
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: B | Question # 3 Answer: D | Question # 4 Answer: D | Question # 5 Answer: D |
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