hi,
Test scenario is used to prepare test case or use case.

Test scenario is nothing but how we are approaching the 
given problem  (or) we can say "no of steps followed to 
approach a particular problem"
for example:
if a person goto an atm machine he can withdraw the money 
or check the balance amount or see the mini statment or he 
can do the some other things.

Test case is a document that says how we are going to test 
a particular problem,her we will be having the i/p, o/p, 
expected results, status, test case id, etc.... according 
to the company rules.

sunny comments are nice,i am giving little example
for login screen
test scenario:user enter the user name and password click 
on submit button getting next screen,
test case:
1.enter username and password click submint(+Ve)\
2.enter invalid data getting proper error or not
3.with out enter user name and password click submit gettin 
g proper error

Test scenario :

A set of test cases that ensure that the business process 
flows are tested from end to end. They may be independent 
tests or a series of tests that follow each other, each 
dependent on the output of the previous one. The 
terms "test scenario" and "test case" are often used 
synonymously


While test case :  A test case validates one or more system 
requirements and generates a pass or fail.

One scenario can have one or more than one test cases.

Ex : Scenatio 1 : Send a mail.

Ex : Scenario 2 : Check mails in inbox.

There will be a no. of test cases in both of them.

Cheerz,
Saurabh garg

First of all meaning of Scenario:
A scenario is an account or synopsis of a projected course 
of action, events or situations. Scenario development is 
used in policy planning, organizational development and, 
generally, when organizations wish to test strategies 
against uncertain future developments.

--> On the basis of this i suggest that Test Scenerio is to 
project how the application respond when we create the 
scenerio to test ; whether from sql script or so & how the 
application respond when we perform certain query or task


--> But first of all we prepare Test cases ; in order to 
get the result of application inculdes LINK, CONTROLS, 
FIELDS .


EG: LIKE WE have to test a page include fields " USER NAME" 
& " PASSWORD" 

-Test case for that is :( which is writtenly based on test 
plan )
 + To Test alphabats in User name 
 + To Test numerical in User name 


Now what is not written in Test plan is Scenerio's which u 
hav to make u r own at most of the time of execution or 
some time at the time of writing test case although 
possibilities of creating Scenerio at the time of Writing 
test cases is nil.  

SCENARIO ( at the time of Execution )of above mention will 
be : 

Test whether any crash arrive when we enter values in 
Username fields & click OK button WITHOUT ENTERING 
Password..



THANKS.. 
PLEASE SUGGEST HW DO U LIKE THIS ANSWER





-