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Oracle Database 23ai SQL Associate Sample Questions:

1. Which clause is used to ensure that only specific rows are deleted in a DELETE statement?

A) HAVING
B) SET
C) WHERE
D) FROM

2. Which INTERVAL data type would you use to store a period of time in years and months?

A) INTERVAL YEAR TO MONTH
B) INTERVAL MONTH TO DAY
C) INTERVAL DAY TO SECOND
D) INTERVAL MINUTE TO HOUR

3. In a relational database, what is a foreign key?

A) A key used to sort data in a specific order
B) A unique identifier for a record in a table
C) A key that is used to establish a relationship between two tables
D) A temporary key generated during query execution

4. What is the purpose of the DBA_OBJECTS data dictionary view?

A) To monitor system performance
B) To provide information about all objects in the database
C) To show the current session details
D) To list all users in the database

5. What will the following query result in?
SELECT e.employee_id, e.manager_id
FROM employees e
WHERE e.manager_id IS NOT NULL;

A) All employees and their IDs
B) Employees who have managers
C) Employees who do not have managers
D) Employees and their managers' IDs

Solutions: