Enterprise Resources Planning BRP is an outgrowth of Material Requirements Planning (MRP) initiated in the 1970's as a new computer-based approach to planning and scheduling of material requirements and inventory, featuring the time-phased order point. MRP evolved to MRP II (Material Resources Planning) the “closed loop” process, to Business Requirements Planning (BRP) and eventually to ERP. As MRPII came into vogue in the late 1970's and early 1980's, software companies began to develop software packages around MRPII concepts.

At the same time, research of integrated data bases was in progress at a university, and out of that research emerged data base management systems BRP . One of the earliest successful commercially-produced data base management systems was IDMS (for IBM-based systems) and DBMS (for DEC-based systems) produced by Cullinane, who's company name was later changed to Cullinet. IMS, a structured data base management system for high transactions, was another data base management system produced by IBM.

The idea of the integrated data base as the engine for fully integrated software was probably one of the greatest outgrowths of Ollie Wight's and Dave Goddard's MRP. Eventually, the acronym ERP was conceived to represent what had already been developed by software companies.

The early software packages were developed by way of a transactional approach, and were highly unfriendly to a user. With the advent of the personal computers, the development of Microsoft's Windows NT, and the mid-range IBM AS/400 computer, client-server systems began to emerge. Windows, used as the base operating system, allowed software packages to become more and more user-friendly.

Today, ERP systems have proliferated extensively, and have reached a stage where development has become industry specific. Thus it is plausible to search for an ERP package developed for one's specific industry idiosyncracies.