Oracle, SQL, Server, IBM-DB2 are examples of:

Server data base

The correct answer is Option (2) → Server data base.

If our requirement entails approach to database by many users, or if it involves simultaneous updating of data by different users, then perhaps server databases such as ‘Microsoft SQL Server’, ‘Oracle’ or ‘IBM DB2’ will provide desired solutions. Although carrying high price tags, a server-based database can give you several advantages in terms of flexibility for the choice of front-end applications, powerful performance independent of platform, and scalability to handle rapidly expanding number of users as well as amount of data.