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.