Which of the following is not an example of DBMS?Oracle DBPostgreSQLMySQLMicrosoft Excel

To determine which of the options is not an example of a Database Management System (DBMS), let’s analyze each option:

1. Oracle DB: This is a widely used relational database management system developed by Oracle Corporation. It is designed to handle large amounts of data and support multi-user environments. Not a question; it's a DBMS.

2. PostgreSQL: This is an open-source relational database management system that emphasizes extensibility and standards compliance. Like Oracle, it is a DBMS.

3. MySQL: This is another popular open-source relational database management system. It is often used in web applications and supports multiple storage engines. Also a DBMS.

4. Microsoft Excel: While Excel can store data in tabular form and perform calculations, it is primarily a spreadsheet application and not a true database management system. Therefore, it does not provide the full suite of DBMS features like querying, transaction management, and concurrent user access effectively.

Final Answer

Microsoft Excel is not an example of a DBMS.