a)	When the requirements documents already prepared 
the start to with respect to test design 
b)	That is very importance to testers
c)	 Based on test design here start the write the test 
case and other testing preparation
d)	So very importance of that test designs


My name is k.chandra sekhar,
My phone no are 9246540049 65880049 ,Hyderabad.
My mail id is ndra_143@yahoo.co.in 
I am take the class for projects if you interst contact
If any body want full explain send the mail