Software Engineering-1 (CS504)
Assignment # 3
Total marks = 20
Deadline Date = 26-12-2011
Please carefully read the following instructions before attempting the assignment.
Rules for Marking
It should be clear that your assignment would not get any credit if:
The assignment is submitted after due date.
The submitted assignment does not open or file is corrupt.
The assignment is copied. Note that strict action would be taken if the submitted assignment is copied from any other student. Both students will be punished severely.
1) You should concern recommended books to clarify your concepts as handouts are not sufficient.
2) You are supposed to submit your assignment in .doc format. Any other formats like scan images, PDF, Zip, rar, bmp, docx etc will not be accepted
3) You are advised to upload your assignment at least two days before Due date.
4) This assignment file comprises of Two (2) pages.
Important Note:
Assignment comprises of 20 Marks. Note that no assignment will be accepted after due date via email in any case (whether it is the case of load shedding or emergency electric failure or internet malfunctioning etc.). Hence, refrain from uploading assignment in the last hour of the deadline, and try to upload Solutions at least 02 days before the deadline to avoid inconvenience later on.
Consider the following case study:
ERP system of Virtual University consists of three subsystems “VIS”, “LMS” and “EXAMS”, all deployed on same web server and sharing a central database (installed on the same web server).
However due to the increased number of students, VU decides to deploy these sub systems on separate web servers named VIS-Server, LMS-Server and EXAMS-Server, still all sharing a central database.
However this time the database will be installed and managed by a separate database server which will be implemented through oracle server.
Now the clients (students and instructors) can connect and request the services from these servers under following protocols:
1) Students can connect only to LMS-Server and can request services from it.
2) Instructors can connect with all three servers (i.e. LMS-Server, VIS-Server, and EXAMS-Server) and can request the desired service.
3) These servers can also connect with each other to get services as when required.
4) No client i.e. neither the students nor the instructors can directly connect with database server.
Question:
Keeping in mind the Krutchen’s 4+1 architectural view model, draw a diagram to represent the deployment view (also called physical view) of the above system.
Also explain the diagram with in four to five lines.
Note:
1. Carefully study the 4+1 architectural view model before attempting the assignment.
2. You can use any set of notations to draw the diagram.
3. Explanation should not exceed more than 5 lines.
