Chapter 3 – Achieving competitive advantage with information systems 1. Please develop a Porters competitive model of the discount retail industry using Walmart as reference. Discuss each of the 5 forces and argue why each is either strong or weak. 2. Briefly summarize the four basic information system strategies (according to Laudon and Laudon, see Table 2 of chapter 3) for dealing with competitive forces. For each strategy, come up with an example on your own (i.e. not repeated from the book or lecture) Chapter 6 Foundations of business intelligence: Database and Information management 1. An IT support organization within a large company wants to develop a relational database to keep track of its work. We will call users of the organizations service CLIENTs. CLIENTs, as needed, submit requests for help called TICKETS Each TICKET, in turn, can have multiple PROBLEM_ITEMs. There are many SUPPORT_SPECIALISTs in the organization. Eventually each PROBLEM_ITEM is assigned to a unique SUPPORT SPECIALIST. Each SUPPORT_SPECIALIST can have multiple PROBLEM_ITEMs assigned to him or her. Since PROBLEM_ITEMs may not be assigned to a human SUPPORT SPECIALIST immediately upon arrival, some PROBLEM ITEMs can be assigned to the SUPPORT_SPECIALIST named Unassigned. 1. Draw an Entity-Relationship diagram for this situation. Be sure to indicate many to one relationships and one to one relationships correctly. 2. For each of the following attributes, say which entity they most logically should be associated with. Also mention if each attribute is likely to be a Key field, a Primary Key, and/or used as a Foreign Key in the table of other entity(s) to establish a relationship. If the attribute is not likely to be any of these things, mention that. Support_Specialist_ID_Number -Text_Description_of_Problem Specialist First Name Ticket_ID_Number
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