Saudi Electronic University System Analysis and Design Questions

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VOENLBH

Computer Science

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Instructions: • Zero mark will be given if you try to bypass the SafeAssign (e.g. misspell words, remove spaces between words, hide characters, use different character sets, convert text into image or languages other than English or any kind of manipulation). • You are advised to make your work clear and well-presented. This includes filling your information on the cover page. • You MUST show all your work, and text must not be converted into an image, unless specified otherwise by the question. • The work should be your own, copying from students or other resources will result in ZERO mark. • Use Times New Roman font for all your answers. Question one:Draw the preliminary class diagram for the system described in the following requirements (the cardinality of the relationships is optional) A company has decided to computerize the circulation of coordinating the documents around its offices, and to do this by installing a network of electronic desks system. Each electronic desk provides users with the following services: 1. A blotting pad (provides a basic word processing facilities), which can hold a document that the user is currently working on. 2. A filling cabinet, which allows a user to store documents. 3. A mail service, which allows a user to communicate with other users on the network. a. Each electronic desk is provided with three trays, corresponding to IN, OUT and PENDING in traditional offices. to organize mail documents. The network will automatically put new mail into a user’s IN tray and will periodically take documents from the OUT tray and mail them to their recipients. b. Documents can move between the trays and the blotting pad, and between the blotting pad and the filling cabinet. Question two: Redraw the following class diagram into the equivalent E-R diagram. Question three: Convert the following E-R diagram, which represent a manufacturing system into relations. Make sure to specify all the primary keys. Question four: Identify all foreign keys in relations you identified in Question 3 and justify your decisions.
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Explanation & Answer

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Instructions:
• Zero mark will be given if you try to bypass the SafeAssign (e.g. misspell words, remove spaces between words,
hide characters, use different character sets, convert text into image or languages other than English or any
kind of manipulation).

• You are advised to make your work clear and well-presented. This includes filling your information on the cover
page.

• You MUST show all your work, and text must not be converted into an image, unless specified otherwise by the
question.

• The work should be your own, copying from students or other resources will result in ZERO mark.
• Use Times New Roman font for all your answers.

Question one:Draw the preliminary class diagram...


Anonymous
Awesome! Perfect study aid.

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