Bgmt 340 Wk 3 Problems and Exercises

Problems and Exercises

Chapter 7 Questions 6, 16 & 17

Business System Analysis

Chapter 7

5. Consider the E-R diagram in Figure 7-20. Based on this E-R diagram, answer the following questions:

* a. How many EMPLOYEES can work on a project?

The amount of employees that can work on the project is unlimited.

* b. What is the degree of the Used_on relationship?

Binary is the degree of the Used_on relationship.

* c. Do any associative entities appear in this diagram? If so, name them.

Yes, Task is an associate entity.

* d. How else could the attribute Skill be modeled?

When looking at the diagram, it seems that Skill could be its own square box coming off of task.

* e. What attributes might be attached to the Works_on relationship?

There are a few attributes that can be attached to the Work_on relationship, which could include Jobs.

* f. Could TOOL be modeled as an associative entity? Why or why not?

Tools cannot be modeled as an associate entity because tools is a very broad subject and different tools can be used for different tasks. For example a mechanic could use a wrench but an engineers tool could be a computer.

16. The owner of two pizza parlors located in adjacent towns wants to computerize and integrate sales transactions and inventory management within and between both stores. The point-of-sale component must be easy to use and flexible enough to accommodate a variety of pricing strategies and coupons. The inventory management, which will be linked to the point-of-sale component, must also be easy to use and fast. The systems at each store need to be linked so that sales and inventory levels can be determined instantly for each store and for both stores combined. The owner can allocate $40,000 for hardware and $20,000 for software and must have the new system operational in three months. Training must be short and easy. Briefly describe three alternative systems for this situation and explain how each...