CAD systems can be divided loosely into two groups, depending on whether they focus more on the work done by engineers, or by architects (though some systems have a broad enough range of capabilities to be used by both). Engineering applications dominated the early history of CAD (and computer systems in general), due to the computationally intensive nature of calculating forces/stresses, and in doing precision machining, while most people are more familiar with architectural design packages that came later, and are somewhat simpler. Nowadays, the boundaries between engineering, manufacturing, architecture, facilities management, and databases are getting blurred by software that can handle a wide variety of tasks.

 

Facilities management systems integrate geometry and databases into a graphical user interface.

 

Floor Maps