Distinguish between a decision support system and an expert
Solution
a)
Decision support system helps the user to get decision by analyze the data. a few decision support systems are rising only for specific company managers whereas other is obtainable for everyone on internet. Some decision supports systems have their own doubt language, graphics and spreadsheet to get and analyze data.
Expert system is an information system which stores the knowledge of human expert and
 then, display reasoning and decision taking similar to human. Every expert system has two
 main components: knowledge base and inference rules.
Knowledge base is the complete subject knowledge or human expert Whereas inference rule
 are the logical judgment on the basis or knowledge base every time user states the Situation to the expert system
b)
Supply Chain
Supply chain is the integrated chain which connects Suppliers, manufacturers, warehouses / stores systematically.
Supply chain concerns with manufacturing of products and its distribution. It includes forecasting, purchasing, production planning, warehousing and distribution.
Focus of supply chain is on enterprise perspective that means forecasting of demand and to fulfil that demand doing planning, distribution transportation etc.
Value Chain
Value chain is a chain of activities of a firm operating in a particular industry which add value to product or services offered by firm in market.
Value chain is a part of supply chain.
Value chain perspective is much broader than supply chain. It covers all business process from the supplier to customer. This includes customer management, supplier management, demand supply management etc.
To categorise the value chain activities all activities of organisation classified in two parts. 1. Primary Activities 2. Supporting Activities
It is a systematic approach of examining various activities to obtain the competitive advantage

