What is the difference between an API , framework and middleware?

Question

Just Randomly got this question in my head! Whats the difference between API , Framework and middleware? Essentially all of them provide abstract low level services to apps. In

Answer 1

The main difference is the purpose of functionality.

An API is designed to solve some specific problem in a particular domain.it contains necessary data structure, classes,methods,interface etc. Such as ADO.net API provides the functionality to connecting Microsoft SQL Server.

A framework designed to help developer to reusable,scalable software application.a frameworks has no specific functionality like API but its various functionality exposed by API . Such as , ADO.net is an API of .net framework for accessing data service. A framework has compiler, programs,class libraries,run-time.it can add plug-in.