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Oracle 1Z0-171 Exam Syllabus Topics:

Oracle Database 23ai SQL Associate Sample Questions:

1. What is the purpose of the MERGE statement in SQL?

A) To update existing rows or insert new rows in a target table
B) To join two tables into one
C) To delete duplicate rows from a table
D) To combine the results of two queries

2. What does the following query return?
SELECT department_id FROM departments
INTERSECT
SELECT department_id FROM employees;

A) All department IDs from the departments table
B) All department IDs from the employees table
C) Department IDs that exist only in the employees table
D) Department IDs that exist in both the departments and employees tables

3. Which command creates a new role in Oracle Database?

A) CREATE ROLE role_name;
B) ADD ROLE role_name;
C) CREATE NEW ROLE role_name;

4. Which of the following statements is true about constraints in Oracle Database?

A) Constraints can only be added when creating a table.
B) Constraints cannot reference other tables.
C) Constraints can be added or modified using the ALTER TABLE statement.
D) Constraints are automatically dropped when rows are deleted.

5. What does the following SQL statement do?
CREATE TABLE employees (
employee_id NUMBER PRIMARY KEY,
first_name VARCHAR2(50),
hire_date DATE NOT NULL
);

A) Creates a table with a primary key and a NOT NULL constraint
B) Creates a temporary table
C) Creates a table with no constraints
D) Creates a table with only VARCHAR2 and DATE columns

Solutions: