Electronic Data Interchange (EDI) involves the electronic exchange of business transaction documents over the internet and other networks between supply chain trading partners. Data representing a variety of business transaction documents are electronically exchanged between computers using standard document message formats. Discuss the characteristics and benefits of utilising EDI in an organisation. QUESTION 3 The Systems Development Life Cycle (SDLC) has a sequence of steps or phases it passes through between the time the system is conceived and the time it is phased out. The phases of the SDLC include investigation, analysis, design, development, implementation, maintenance and retirement. Discuss the Investigation, Analysis and Implementation phases in detail. QUESTION 4 An organisation can survive and succeed in the long run if it successfully develops strategies to confront the five mpetitive forces that shape the structure of competition in the industry. From an information systems perspective, the tool provides further pointers towards how IS can be used to benefit the business. Discuss the mpetitive strategies that an organisation may use to combat competition and provide examples. QUESTION 5 The value chain is a business model used to examine all company activities involved in taking a product or service from idea to sellable item. Ideally, companies can use the value chain model to strengthen their point of view and widen their profit margin leading to more efficiency and fewer costs. Discuss the Primary and Support activities of the Business Value Chain model