[1] MRP was computerized by the aero engine makers Rolls-Royce and General Electric in the early 1950s but not commercialized by them.
Orlicky's 1975 book Material Requirements Planning has the subtitle The New Way of Life in Production and Inventory Management.
[6] [7] The basic functions of an MRP system include: inventory control, bill of material processing, and elementary scheduling.
This approach provides real information about those parts that are truly at risk of negatively impacting the planned availability of inventory.
Under the DDMRP approach, consultants selling it claim that fewer planners can make better decisions more quickly.
That means companies will be better able to leverage their working and human capital as well as the huge investments they have made in information technology.
DDMRP leverages knowledge from theory of constraints (TOC), traditional MRP & DRP, Six Sigma and lean.
It is effectively an amalgam of MRP for planning, and kanban techniques for execution (across multi-echelon supply chains) which means that it has the strengths of both but also the weaknesses of both, so it remains a niche solution.