Reference no: EM132373910

Systems Analysis and Design - Case Study Assignment

"Natural-Lee" Case Study -

ACTIVITY 1 -

1. Use the background information to create a short summary (one short paragraph) about the "Natural-Lee".

2. Create an organisation chart for the business.

3. Use the information above to describe the area of the organisation under study (i.e. the business functions that will be handled by the new information system).

4. Add the background information, organisation chart, and business functions to your Report document in Part A: Initial Investigation.

ACTIVITY 2 -

1. Either by yourself or with another class member, brainstorm all the functions that the "Natural-Lee" Information System might fulfil. Keep it at a very high level.

2. Prepare a draft System Vision Document for the Farm Information System. This System Vision Document will be revised when you find out more about the requirements for the system. An example System Vision Document can be seen in Figure 1.8 of the textbook (Figure 1.5 in the 6th ed).

3. Add your System Vision Document to your Report document in Part A: Initial Investigation.

ACTIVITY 3 -

1. Create a table, listing all tasks separately, with their duration;

2. Identify all dependencies, and indicate what predecessor tasks are required;

3. Construct a Gantt chart in Microsoft Project or other project management software;

4. Identify the PERT/CPM chart in the software, and identify the critical path;

5. Determine the overall duration of the project;

6. Take clear screenshots of the Gantt chart and PERT/CPM chart and paste into your Report document in Part A: Initial Investigation under Project Management.

7. Include the overall duration and critical path in your report.

ACTIVITY 4 -

1. What are the risks associated with this project? Create a list of up to 10 risks and their likelihood of happening (see Study Guide topic 4, activity 4.6 for an example of how this should be set out).

2. Define the anticipated benefits of the new system. This should include both tangible and intangible benefits. Wherever possible, translate the intangible benefits into anticipated tangible benefits.

3. Define the expected costs of the new system. Look at the examples given in workshop activities for some examples of expense categories. It is OK to give estimates at this point.

4. Use two or more cost-benefit analysis techniques to decide whether to proceed with the project.

5. Identify any assumptions and interpretations that you are making with respect to the information that you have been given, that you are estimating, and that you are projecting (into the future).

6. Create a new section in Part A of your report: Risk and Cost Benefit Analysis. Insert your work from above, and give a clear indication as to whether it is feasible to continue with the project.

7. Does the proposed system present a strong business case? Why or why not? Include a recommendation as to whether the system should proceed, as the final part of your preliminary report. The Preliminary Investigation part of your Report can now be submitted.

ACTIVITY 5 -

1. What fact-finding techniques, apart from interviews, do you recommend to find out the requirements for the new system?

2. Include the recommendations for other fact-finding techniques, in your Report. Provide enough justification for using those techniques.

3. Identify at least two staff members with different primary job roles of interest to this project for interview.

4. Prepare a list of questions for an interview with each staff member. Identify the time anticipated for the interview. Review your topic on creating interview questions, and make sure you include suitable question types.

5. Include the interview plans (before, during, and after) in the Appendices for your Report.

ACTIVITY 6 -

1. Write down a list of the main functions needed to be handled by the new system.

2. What are the roles that will be interacting with the system?

3. Write down a list of additional features which in principle could be included in the new system, but are more likely to be held back for now and considered in the future if and when the resulting information system is subject to later review and enhancement(s). Include the list with appropriate descriptions in your report.

4. Using all the information that you know about the NL business so far, create a use-case diagram (with all actors/users and use cases) for the new system and include it in your report. You may provide enough explanation about the use case diagram.

5. Select four use-cases and write a brief use-case description for them.

6. Pick one of these use-cases and write a full use-case description for it. Draw and use an activity diagram in the full description.

7. You need to have the following in your report:

• use case list and descriptions
• the use-case diagram and its explanation
• brief use-case descriptions for 4 use-cases
• a full use-case description
• an activity diagram

ACTIVITY 7 -

1. Review the NLA fact-finding summary and all other information you have about the required system and critically analyse this for duplications and inconsistencies.

2. Draw an ERD or domain model class diagram with crows-foot cardinality notation. Assume that system entities include farms, customers, status as Regular or Variable, orders, vegetables with associated price per unit, and delivery person (at minimum).

3. Design tables - making sure each table only refers to one "thing". As you create the database design, identify primary and foreign keys by underlining primary keys, and making foreign keys italic.

4. If you add primary keys which use codes - for example a code for the farmID, then identify the format of these codes.

5. Create suitable sample data to populate the fields for at least three records in each table.

6. Include the following in your report:

• The ERD or domain model class diagram you have completed;
• The database design (schemas);
• Formats of codes used;
• Sample data for each table.

ACTIVITY 8 -

1. Create a system sequence diagram for one of the use cases identified in Activity 6. Add this system sequence diagram to your report in the appropriate area.

2. Search online for potential commercial software packages for "Natural-Lee". Identify two packages, and compare their features, and their suitability to be used as the new system.

3. Present at least three options for the new system in your report. One of these must be in-house development, and two of the others may be the commercial packages as identified in (3) above.

4. Review your feasibility analysis for the new system. Taking all options into consideration, make a recommendation for the new system, in your "Conclusion and Recommendations" section.

Attachment:- Natural-Lee Case Study.rar