The Hera design methodology stems from RMM, the Relationship Management Methodology, developed by Isakowitz and others. The basis is a data model much like the entity-relationship model in which relationships have a navigational meaning. In Hera there is first a Semantic Layer that deals with semantic data integration. In the Application Layer the data is structured into a hypermedia form and the hypermedia structure is adapted according to the user profile. The generation of the presentation then takes the capabilities of the user’s platform into account.