Summary:

Model of ground cadastre in Poland was taken under analysis in this paper. Roles and graphical notation of Object Oriented Analysis was used to model ground cadastre. That model consists of four layers of different abstraction: sub-jects, objects and classes, structures, attributes. Additionally model includes sub-jects: organization, geometry, objects, entity, law state. Ground cadastre was pre-sented as multitasking system. Such defined system is possible to be introduced in Polish conditions.