Introduction In this assignment, it will firstly analyse the difference between various data sources and then it will evaluate both pros and cons in each source. Finally ,I will summarize which source I prefer and which is suitable for a available type of information. I have chosen my topic which I will enable use a wide quantity of information sources.Therefore,I will show the topic as I am posing for dissertation purposes,it is as follow; “The impact of the Internet on customer relationship
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