1. A method for generating a user interface in a distributed computer system, the method comprising: displaying a first business function component selected by a first user on a first display area of a frontend system, the first business function component being associated with first application logic to access a first business application provided in a server system; displaying a second business function component selected by the first user on the first display area of the client system, the second business function component being associated with second application logic to access a second business application provided in the server system; forming a relationship between the first and second business function components, wherein a visual representation of the user interface is created based on the displaying steps and the forming step; generating a canonic representation of the visual representation; and generating an executable user interface code from the canonic representation, the user interface code being operable to access the first and second applications provided in the server system to retrieve desired data.