GIS is an instrument that lets you integrate and analyse large quantities of spatial data, to produce meaningful information. Information that can be used for location selection, management, logistics, direct marketing, data modelling, planning and communication. A map is a model of the world. In a GIS, the real world is digitally represented in different map layers. Every layer contains objects, such as postal codes, cities, streets, parcels, buildings, and so on.
Every object is linked to data in a database, describing the objects.
This database can in turn be integrated or linked with your own data. An example would be to pinpoint the location of your clients by combining your client data with the postal code map. Geodan has a whole range of standard products in software, desktop mapping, databases, meta-information, customisation, systems and the Internet. Geodan has data products for areas, roads, streets, elevation, topography, socio-demographics and business data of The Netherlands and of Europe. Geodan offers consulting services concerning GIS and related issues, such as project management, geomarketing, water management, metainformation, the environment, planning and strategic decision making.