Information Systems homework help

Task 1: 150-200 words with references
What are the advantages and disadvantages of using the VPD mechanism to control access to data (sub-themes: What can VPDs do the views cannot? or what VPDs do better than views).
Task 2: 150-200 words with references
Why were there so many “dot-com” failures in the early part of 2000’s?  What are the lessons learned from these experiences?
 
 

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