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Imagine a company with a large number of systems. If the system you are currently developing is going to interact with another system that is still owned and managed by the company, should it be considered an external entity or just a process? Justify your answer.
Part 2
Often, DFDs are not created and the documentation is incomplete, so the programmers are left with the task of bridging the gap. In relation to this statement, answer the following questions:
Draw the E/R diagram for following situation: Doctors prescribe drugs for patients. A given doctor can prescribe many drugs for a certain patient.
Business Case - Using the information that you compiled in the project proposal, prepare a Business Case for this project.
Discuss and explain the difference between encapsulation and information hiding. In addition, describe the role both of these concepts play in helping to make designs more robust and extensible.
Identify the principle viewpoints which might be taken into account in the specification of this system and organize these using a viewpoint hierarchy diagram.
Identify the challenges Lexmark faced regarding information flow. How were the information flows provided before and after implementation of the system? Identify the decisions supported by the new system.
Draw the E-R diagram which models an online bookstore. List entity sets and their primary keys. Assume the bookstore adds music cassettes and compact disks to its collection.
The systems development life cycle (SDLC) is a framework which consists of distinct sequential processes. Recognize different phases of the SDLC?
Create the logic for a program that would produce a count of readers by income groups as follows: under $20,000, $20,000- $29,999, $30,000-$49,999, $50,000-$69,999, and $70,000 and up.
Find the case requirements and analyze them. A fully annotated E-R diagram 1 and 2 showing the entities, primary and foreign keys, composite keys and relationships.
Discuss and explain what the UDP does and its relationship to TCP in what ways is it similar and different, and why would we use UDP, and why can not a user program access IP directly?
Printer, on which the readings from these three sensors are shown. Readings are taken checkpoint. Draw a class diagram summarizing the structure of the monitoring station.
Discuss how do you access the element of array a located at row two and column four?
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