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Oracle 1Z0-171 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Using Set Operators | - Use UNION, UNION ALL, INTERSECT, and MINUS operators |
| Controlling User Access | - Create and manage roles - Differentiate system privileges from object privileges - Grant and revoke privileges |
| Using SQL Functions | - Use character, number, and date functions in SELECT statements - Use conversion functions |
| Using DML Statements | - Update rows in a table - Delete rows from a table - Control transactions - Use the MERGE statement - Insert rows into a table |
| Using Joins | - Use cross joins - Use equijoins and non-equijoins - Use outer joins (LEFT, RIGHT, FULL) - Use self-joins |
| Using SELECT Statements | - Execute a basic SELECT statement - Use the FETCH clause to limit rows returned - Use the ORDER BY clause to sort rows - Use the WHERE clause to restrict rows |
| Using Subqueries | - Use correlated subqueries - Use single-row subqueries - Use multiple-row subqueries |
| Using DDL Statements | - Create and manage sequences - Create and manage tables - Create and manage constraints - Create and manage views - Create and manage indexes |
Oracle Database 23ai SQL Associate Sample Questions:
Question 1
Which type of join returns all rows from the left table, even if there are no matches in the right table?
A. FULL OUTER JOIN
B. INNER JOIN
C. LEFT OUTER JOIN
D. RIGHT OUTER JOIN
Question 2
What does the following SQL query return?
SELECT employee_id, salary * 12 AS annual_salary FROM employees;
A. Employee IDs and their annual salaries
B. Salaries multiplied by 12 and stored in a new table
C. Only employees with salaries greater than 12
D. Monthly salaries of all employees
Question 3
What happens when a unique index is created on a table column?
A. The column cannot contain duplicate values.
B. The column can only contain NULL values.
C. The column values are automatically encrypted.
D. The column data type is converted to a primary key.
Question 4
Which clause is used to ensure that only specific rows are deleted in a DELETE statement?
A. FROM
B. WHERE
C. HAVING
D. SET
Question 5
What is the purpose of a correlated subquery?
A. A subquery that depends on the result of another subquery
B. A subquery that combines data from multiple tables
C. A subquery that references columns from the outer query
D. A subquery that can be used only with aggregate functions
Solutions:
| Question 1 Answer: C | Question 2 Answer: A | Question 3 Answer: A | Question 4 Answer: B | Question 5 Answer: C |
