Middleware
A middleware is an infrastructure that supports and connects enterprise applications. The middleware lies between the operating system and the enterprise application. It lies on each side of a distributed computer system network. Middleware supports sophisticated and distributed computer software applications. Any application between the computer kernel and user applications is considered to be a middleware. The most important aspect of the middleware is that it enables communication and input and output of the developers. Middleware becomes the link between the os-ware and the application software. This aspect of the middleware makes it possible for the applications to borrow the services of middleware. On the other hand, the middleware uses network layer services operating system (Myerson, 2002).
Types of middleware Middleware gets used as a hybrid, public, or private. The best way to understand middleware is to look at some specific examples. The examples do not get built on any platform. However, they can be incorporated into cloud computing (Mohammed, 2005). Some common examples are
Message-oriented middleware The infrastructural middleware supports sending and receiving messages in the distributed applications environment. According to Serein (1999) it helps to disburse applications to various other platforms. It eases the work of creating software applications to get incorporated in several operating

Figure 2: Message oriented middleware
Transaction middleware The middleware has applications like transaction processing monitors. Britoon & Bye, (2004) argue that, it integrates web application servers. It has not been in existence, but this middleware are finding their usage toda
Figure 3: Transaction middleware
Database middleware It enables direct access to the database. It interacts directly with the database. It is the