ERP systems are beasts. To be happy, they have to be well fed. Computer Aided Design/Drafting (CAD) systems are a source of the food for Enterprise Resource Planning (ERP) systems since they contain significant information regarding the plans and materials needed to construct a ship. ERP systems are data hungry. They can only be effective at planning purchasing and production as long as the beast is consuming the information that the CAD system provides. In fact, there is a direct link between the success of an ERP system and how well it is fed the information it requires to do its job.