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Oracle 1Z1-171 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Using Joins | - Use equijoins and non-equijoins - Use cross joins - Use outer joins (LEFT, RIGHT, FULL) - Use self-joins |
| Using DDL Statements | - Create and manage tables - Create and manage views - Create and manage indexes - Create and manage sequences - Create and manage constraints |
| Controlling User Access | - Create and manage roles - Grant and revoke privileges - Differentiate system privileges from object privileges |
| Using DML Statements | - Use the MERGE statement - Update rows in a table - Insert rows into a table - Delete rows from a table - Control transactions |
| Using Subqueries | - Use correlated subqueries - Use multiple-row subqueries - Use single-row subqueries |
| Using Set Operators | - Use UNION, UNION ALL, INTERSECT, and MINUS operators |
| Using SQL Functions | - Use character, number, and date functions in SELECT statements - Use conversion functions |
| Using SELECT Statements | - Use the FETCH clause to limit rows returned - Execute a basic SELECT statement - Use the ORDER BY clause to sort rows - Use the WHERE clause to restrict rows |
Oracle Database 23ai SQL Associate Sample Questions:
What does the following SQL query do?
SELECT * FROM employees WHERE salary > 5000 ORDER BY department_id;
- A. Retrieves all employees with a salary greater than 5000, sorted by salary in ascending order
- B. Retrieves employees with salary less than 5000, sorted by department ID
- C. Retrieves all employees with a salary greater than 5000, sorted by department ID in ascending order
- D. Retrieves all employees, sorted by department ID
Correct Answer: C 🗳️
Which function is used to convert a string to uppercase in SQL?
- A. CASE_UPPER
- B. CONVERT_UPPER
- C. UPPER
- D. TO_UPPERCASE
Correct Answer: C 🗳️
What does the following SQL query return?
SELECT employee_id, salary * 12 AS annual_salary FROM employees;
- A. Only employees with salaries greater than 12
- B. Salaries multiplied by 12 and stored in a new table
- C. Employee IDs and their annual salaries
- D. Monthly salaries of all employees
Correct Answer: C 🗳️
Which command would drop an index from a table?
- A. DROP INDEX
- B. TRUNCATE INDEX
- C. DELETE INDEX
- D. REMOVE INDEX
Correct Answer: A 🗳️
What happens when a unique index is created on a table column?
- A. The column can only contain NULL values.
- B. The column data type is converted to a primary key.
- C. The column values are automatically encrypted.
- D. The column cannot contain duplicate values.
Correct Answer: D 🗳️
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