What Supply chain management is
A subset of value chain management, it is an old system that's been updated with new technology. It specifically refers to the relationship between a supplier and a retailer. For example, a major retailer can monitor surplus on its shelves right down to an individual product, and this enables the retail store to keep its supplier aware of how its product is selling. In return, the retailer may demand favorable promotions from the supplier.
The meaning of Document management
The computerized administration of electronic and paper-based documents. A document management system generally includes a scanner and an optical character recognition (OCR) program for converting paper documents into electronic form.