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What is diff between equialence partioning and boundary
value analysis
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Answer Posted / mohan shyam
Equivalence partioning:-
take a example of login id field. This field can accept
minimum 6 characters and maximum 15 characters. So in this
technique we choose some random values like:-
a). Few values less then 6(1,3,4,5)
b). Few values between the criteria(7,9,11,13) &
c). Few values more then 15(17,21,33,45)
After making a subset of all these values,we select all the
values one by one from the subset and enter in Login ID
field. The value which reside in the criteria is accepted,
rest are rejected.
Boundry value Analysis:-
We all know that Boundries are most sesitive areas and most
error prone areas. So, all those values which are at
boundry are tested in this technique. This is done on the
basis of (-1,+1).
The login ID field only accept minimum 6 characters and
maximum 15 characters...so on the basis of (-1,+1),the
values to be tested will be 5,6,7 for minimum and 14,15,16
for maximum. when we implement these values one by one: 5
and 16 will be rejected(because these values are not
fulfilling the criteria) and 6,7,14,15 will be accepted
(these values are fulfilling the criteria)
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