Let's assume your customers requirements are 25 PPM. That means that you would be allowed 25 pieces for every 1,000,000 pieces or 250 defective parts per year. Or to put it another way, one bad part per day! Notice I did not say one bad part per day per person or job, or shift or machine.
The dynamic inheritance allows you to follow open-closed principle by extending classes without modifying existing classes and allows you to choose features that you need at runtime. Of course, dynamic languages such as Ruby make this a lot easier as you can extend classes or objects with modules at runtime, e.g.
The Dynamic Purchasing System (DPS) is a procedure available for contracts for works, services and goods commonly available on the market. As a procurement tool, it has some aspects that are similar to an electronic framework agreement, but where new suppliers can join at any time.t is to be run as a completely electronic process, and should be set up using the restricted procedure and some other conditions (as set out in Regulation 34 of the Public Contracts Regulations 2015). Contracting authorities, including central purchasing bodies, may set up a DPS.