User interface, system and method for performing a web-based transaction

A method of establishing a transaction configured by at least one set of web based data sources, wherein at least two of said web based data sources are accessible via web-servers, and at least one set of entities comprises at least two entities accessible via different web-servers, the method comprising:

• establishing at least one query, said query comprising a configuration of one or more desired entities,
• searching in at least two of the web-servers for entities matching the configuration, said search comprising searching for a combination of at least two different entities, a first entity and a second entity being includable in the at least two different entities, and presenting at least one of the found set of entities to a user,
• the method being implemented on a computer,
• the computer comprising one or more central processing units, one or more memories and one or more network interfaces to one or more networks,
• the computer further comprising a search engine comprising program code which, when executed on said one or more central processing units performs a search on the basis of user inputted search criteria,
• a user interface comprising at least one monitor displaying in dependency of said program code,
• the different entities being entities which may be bought from different web-based data sources,
• said search engine being configured to performing a search for said configuration on at least two different web-bases data sources for said combination,
• said search engine presenting at least one found configuration of different entities by means of said user interface,
• said search engine taking mutual dependencies between said entities into consideration, and
• said search engine availing an order input defining a configuration determined on the basis of said at least one found configuration presented by means of said user interface.

A system configured for searching for a combination of at least two different entities contained in web-based data sources,

• the system comprising a plurality of search engines established for extraction of data stored in at least two different web-based data sources, at least one of the search engines being implemented by means of at least one computer,
• the at least one computer comprising one or more central processing units, one or more memories and one or more network interfaces to one or more networks,
• the at least one computer further comprising a search engine comprising program code which, when executed on said one or more central processing units performs a search on the basis of user inputted search criteria,
• said search engine being configured for performing a search for a configuration of at least two different entities on at least two different web-bases data sources for said different entities,
• said configuration comprising a first entity and a second entity being includable in the at least two different entities that the system is configured to search for,
• said search engine presenting at least one found configuration of different entities by means of a user interface,
• said search engine availing an order input defining a configuration determined on the basis of said at least one found configurations presented by means of said user interface,
• said system taking mutual dependencies between said entities into consideration, and
• the user interface comprising at least one monitor displaying in dependency of said program code.