Use-case model of the overall system
WebGIS system that is being presented is used by three classes of users: Web Users, Authorized GIS
Users and WebGIS Portal Administrators (see figure 2). Generalization relationship between user
classes represents ability of a user to play multiple roles.
Web users are the most general class with the least functionality available. They access the system
trough a WebGIS portal for viewing maps and querying geographic features. Web mapping and
querying are not all possible WebGIS functions, but it is the set of functions most suitable for city
GIS portals which are primarily target of Ginis framework (Stoimenov et al., 2004).