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DFD Assignment
(1) Please make sure you name the diagrams exactly as asked. Otherwise, you might lose points.
(2) Submission of assignments via Blackboard should only be done once. So please ensure that you are
submitting the correct/final version – email me if you have an issue.
(3) You may want to submit your solution at least 30 minutes before the deadline. You are responsible
for late penalty if any technical difficulty results in your submission being accepted after the
deadline.
Microsoft DFD Assignment:
System Description:
TenDollarReview.com is a website that allows any Author to submit a short story and have it
reviewed for a fee of $10. It also allows any Critic to go to the site and review submitted short
stories for free.
To submit a short story, an Author goes to the site and submits a story by cutting and pasting it
onto the submission screen. At the same time, the Author also includes their personal
information and the story information (category type, title) of the story submitted and submits it
all at once. The system then takes the story and stores it in the story submission file.
For a Critic, they go to the system and select a category of story to review. The System displays
the available titles of submitted stories for that category type. The Critic selects a story and reads
it. The Critic enters their review of the story into a submission page and submits. The Critic
receives no payment or any other feedback. The system stores the submitted review in the
review submission file.
To obtain reviews the Author must pay $10 by entering payment information. The system stores
the payment information in the transaction file. Each day the system sends a payment
transaction report to the Payment Department of a payment company.
After submitting payment information, the author can access the review of the short story.
Create data flow diagrams as detailed below using MS Visio based on the above description for the
TenDollarReview.com system. You are responsible for ensuring the diagrams contain all the required information,
regardless of the tool you use. You MUST use the shapes that we covered in the class for all necessary
icons.
Q1: Draw the Context Diagram of the TenDollarReview.com system and name that page
“Context_Diagram_by_” plus your last name (e.g., Context_Diagram_by_Alomari) (1 pts)
Q2: Draw the Level-0 DFD of the TenDollarReview.com system and name it “Level0_Diagram_by_”
plus your last name (e.g., Level0_Diagram_by_Alomari).
MIS 330-A01 Summer(A) 2018: DFD Assignment
Q3: Choose only one process in the Level-0 DFD and further decompose it into a Level-1 DFD. Name
it “Level1_Diagram_by_” plus your last name (e.g., Level1_Diagram_by_Alomari). NOTE: To
decompose one process you are allowed to make assumptions about what goes on inside that process
beyond what is described in the description of TenDollarReview.com but you cannot change or
contradict the system description.
Hints
• As for external entities, you are the external entity
• In the level-0 diagram for Q2, you should have approximately 4 major processes (however, you can
have more or less than 4 depending on whether they make sense and capture how the system works).
• In the level-0 diagram for Q2, though things happen in sequence, remember that DFDs do not show
when or how often things happen.
• Make sure you have included all the needed data flows that are indicated in the narrative. Missing
data flows will lose points.
• Make sure that all the processes, entities, and data flows are named properly (do not forget about the
naming rules).
• Keep in mind the principle of balancing when you decompose from Q1: context diagram to Q2:
level-0 diagram and from Q2: level-0 diagram to Q3: level-1 diagram. If the diagrams are not
balanced, you will lose points.
• To the best of your ability, if you have data flows crossing with each other or other symbols, try
moving them around or changing their shapes to eliminate the overlap. Otherwise, it will be hard for
me to read and grade your solution.
• Have fun. Thanks.

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