Question

create three preliminary models for Credential Management System using modeling tools. For the preliminary models, since they are nonfunctional, you can use Lucid Chart, PowerPoint, or Visio.

Each of the three preliminary models is worth 10 points. The models will be graded on:

• Clearly defined model title (1 pt)
• At least three subsystems identified (3 pts)
• The professionalism of design [the design appear ready for production] (3 pts)
• Shapes and elements are appropriate and professional (3 pts)

Answer 1

ans) First, we should have the knowledge of Credential Management System, basically it is a system which deals with the sensitive data, like password, username, banking details so that transaction can be done or you can login to a website or  account. It is very important because to verify the user that he is authentic or not.

I draw all the three preliminary models for Credential Management System in Microsoft Visio.

• Data Flow Diagram
• Class Diagram
• Package Diagram

First, i will attach the diagram of DFD, here is the screen shot of the diagram. In this diagram user will enter the login details in the credential system then credential system further cross check the details in the database, if all the details is right then user will be authentic user and can be logged into the portal.

second, diagram will be class diagram which shows the class used in the credential management system and the script file related to them, here is the screen shot of the class diagram.

third and the last diagram is Package diagram which is used to show the whole system in a organize way. Here is the screenshot of the diagram

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Hopefully, you will get the answer.

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