Systems integration is recognized as a key to improving efficiency and productivity in an engineering and manufacturing environment. The ultimate goal is to provide engineering management with improved systems efficiency, control and monitoring capabilities, and to allow for consistent, accurate and real-time sharing of data between related functions which now rely on manual procedures for communication between standalone applications. Because of the technical , organizational isaues involved, systems integration will occur in a gradual, modular fashion, will require considerable management effort , support. The proposed starting point for this process is the integration of Manufacturing Resource Planning, Computer Aided Design, . MRP II, being an engineering , manufacturing systems controller, will serve as the central coordinator of this , future integrated systems. MRP II includes such functions as engineering data maintenance, shop floor control, purchasing, accounting, material requirements planning, inventory control. CAD, as the first system to be integrated into MRP II, will link the design , drafting processes with these functions.