Differences between CAD and GIS
Computer-aided Design models things in the real world. Geographic Information System models the world itself. GIS uses geographic coordinates systems and world map projections while CAD coordinates are relative to the object being modelled and are not usually relative to any particular place on earth. The CAD technology designs elements that will be produced while GIS represent information of an area as it appears. Geographic Information System is used to establish relationships between geographical objects and data, it makes use of spatial data while CAD is all about drawing of models using coordinates relative to the objects. Computer-aided Design designs products in 2D or 3D diagrams which may be viewed at different angles allowing the designer to know how a building will be constructed. Note that Computer-aided Design models don’t exist until they are designed and GIS is used to establish relationships between geographical objects and data. It captures analyzes, stores, and presents geographical information in a way that people can interpret easily.CAD requires text, circles, and lines.Geographic Information System, spatial data is used in conjunction with rasters and vectors to create maps that show roads, states, and towns. Both CAD and Geographic Information System help in the development of the management system of any facility since the mapping aspect determines the square footage of an area and how it can be used.