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Important Note:

 

This Assignment is the continuation of First Assignment. Take same case study given in Assignment 1 (also provided at the end of this assignment); apply the techniques and methods from lectures (7-13) in order to finalize the tasks of second assignment listed below in task description. 

Reference:

Please refer to the case study given in assignment no. 1 as well as to the solution of assignment 1.

Note: Same case study is also given at the end of this assignment for your convenience.

Task:

In this assignment you will focus on the task given below:

Draw a comprehensive ER-diagram along with their relationships and cardinalities.

You have to perform all the necessary steps that are included in the above task in your solution file.

 

Drawing Final ER Data Model:

You can use any tool for drawing like MS Office or Visio.

 

Important things to consider: 

  1. As happens in real world that everyone visualize a problem in different way so the solutions of all students should be according to their own thinking not taken from some source.
  2. As this is your first comprehensive design, so you have to work very keenly and with concentration. This design requires your full attention as this conceptual design will be transformed into a relational model in next assignment. Any mistake in this conceptual design can cause you much burden afterwards.

 

 

 

Case Study

 

Suppose we have a wireless ad hoc network. A wireless ad hoc network is a decentralized type of wireless network. The network is ad hoc because it does not rely on a pre existing infrastructure, such as routers in wired networks or access points in managed (infrastructure) wireless networks. Instead, each node participates in routing by forwarding data for other nodes, so the determination of which nodes forward data is made dynamically on the basis of network connectivity.

Nodes in the ad hoc network has unique id that identify it across the network. Each of the nodes uses a certain protocol.

Various protocols are used including aodv, dsdv, dsr etc. There are various version of a specific protocol. An ad hoc network typically refers to any set of networks where all devices have equal status on a network and are free to associate with any other ad hoc network device in link range.

Nodes in the ad hoc networks send packets to each other. Each packet has two parts namely: header and data. Header information contains source destination address and some other information. Each packet is sent on one of the route based on the source destination address. There can be several hopes around one route. Every route is assigned a weight based on some pre defined rule. 

 

 

 

 

Good Luck

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Replies to This Discussion

AOA

Node_Info aur Protocol_Info ky mid (dirmiyan) main kia likha huwa hai?????????????????????????????????????

Carry

Very Simple Assignment ha or sirf ER digram banan ha bus or Diagram bhe Tariq Bahi na Shiar kia ha 

thnx sir 

mn be apna solution post krti hn,,,

yr ye protocol_inof & Header info ky beach wale diamond me kia likha he ??

many kal jama karwa di hai 

            

Correct. Larki Intelligent he copy karnay men

hehehehe

+ Gul Sanobar (bcs-iv)  gud keep it up & thanks for solution 

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bs ye sara fiNal sOlution hai .. ?? + Gul Sanobar

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