Building Information Modeling (BIM) is the process of generating and managing building data during its life cycle. BIM involves representing a design as objects – vague and undefined, generic or product-specific, solid shapes or void-space oriented (like the shape of a room), that carry their geometry, relations and attributes. BIM design tools allow for extracting different views from a building model for drawing production and other uses. These different views are automatically consistent – in the sense that the objects are all of a consistent size, location, specification – since each object instance is defined only once, just as in reality. Drawing consistency eliminates many errors. Typically it uses three-dimensional, real-time, dynamic building modeling software to increase productivity in building design and construction.