What are the functions and relationships between both customer and supplier relationship management and internal supply chain management?

What will be an ideal response?

Answer: Customer relationship management is a term that broadly refers to planning and control activities and information systems that link a firm with its downstream customers. Supplier relationship management systems are planning and control activities and information systems that link a firm with its upstream suppliers. The firm lies between suppliers and customers in the supply chain, and an internal supply chain management system must facilitate information flows between higher and lower levels of planning and control systems within the organization.