What is Middleware ?

     Middleware is a type of software. It mediates between two different types of applications and provides services that are otherwise not provided by the underlying operating system. For example, in distributed applications , middleware can support data management by allowing programs written for accessing a particular database to access other databases. Similarly, middleware can enable communication between two disparate applications by providing messaging  services.

Middleware is used in a client- server system. The middle ware here is a software layer acting as a connector between the client and server applications. It provides messaging, managing, and support services.