All the instruction and programs loaded into the computer’s memory are known as software.
System software is the computer software designed to operate the computer hardware and to provide a platform for running application software.
Application software also known as “application” or “app”, is computer software designed to help the user to perform specific tasks.
Desktop Application/window application
Desktop application can be accessed single user at a time. it is not globally accessible.
eg. ms office
Web application like google, yahoo, facebook can accessed by multiple users at the same time globally.
Web Application Architecture
Presentation layer is a user interface. Client/User interact with any application through presentation layer.
Business logic is a logic for any particular problem to solve it. it is also called programming.
Data link layer(DL)
Independent application to transfer data to each other through data link layer.