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Requirements Exercise
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Functional or Non-Functional?
1.The user shall be able to search either all of the initial set of databases or select a subset from it.
2.The system shall not disclose any personal information about customers apart from their name and reference number to the operators of the system.
3.The system shall provide appropriate viewers for the user to read documents in the document store.
4. The system development process and deliverable documents shall conform to the process and deliverables defined in XYZCo-SP-STAN-95.
DFD
A personal insulin pump is an external device that mimics the function of the pancreas
It uses an embedded sensor to measure the blood sugar level at periodic intervals and then injects insulin to maintain the blood sugar at a ‘normal’ level.
Using readings from the embedded sensor, the system automatically measures the level of glucose in the sufferer’s body
Consecutive readings are compared and, if they indicate that the level of glucose is rising then insulin is injected to counteract this rise
The ideal situation is a consistent level of sugar that is within some ‘safe’ band
Draw a DFD
You are hired as a system engineer to analyze the automated insulin delivery system requirements and draw a data flow diagram to represent the processing that takes place in the insulin pump system introduced in the above.
Context Model
Discussion: Context Model
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Draw a Context Model
For a patient information system in a hospital.
You may make any reasonable assumptions about the other hospital systems that are available
Your model must include a patient admissions system and an image storage system for X-rays, as well as other diagnostic records.
UseCase Discussion
Part 1 : Complete the following Exercise, Then view your peers submissions and comment on at least TWO.
After going through the slides, Develop a BRIEF use case for one of the following scenarios.
1. Making a withdrawal at an ATM
2. Depositing a check at an ATM
3. Searching for books on a specific topic using an online book store
4. Registering for a class using Marynet
5. Buying a laptop computer from an online store
6. Ordering a song for a specific artist (you do not remember the exact name of the song) from iTunes
7. Making a hotel reservation online
Part 2 :
Develop a fully dressed use-case for the case you picked in part 1 based on the template:
UseCase Diagram Discussion
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Read the case IT210UseCaseDiagram_PVFcase.doc Download IT210UseCaseDiagram_PVFcase.doc
Optional(View Video posted on Module 6)
Use UML Diagrams from Google Workspace to draw the use case diagram – Link to Online UML Tool mentioned in tutorial (the link has changed)
https://diagrams.freebusinessapps.net/diagramsLinks to an external site.
Upload to Canvas, then view and comment on 2 of your peers diagrams
ERD Exercises Discussion
ERD Exercises Discussion
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First Complete Both Exercises, post your answers, and then view your peers’ submissions and comment on at least TWO.
Exercise 1:
For the E- R diagram provided in the following figure, draw in the relationship cardinalities and describe them. Describe any assumptions you must make about relevant business rules. (View the video slides for more explanation)
Exercise 2:
Professors in Tiny college may teach no class at all or at most three classes each semester.
A class must be taught by a professor.
Draw the ER Diagram.
Identify the cardinalities and name all your relationships.