The test cases can be categorised. First while testing the 
application first we can write the UI ( User Interface ) 
test cases. then we can write the Usability Test cases then 
we can write the Validation test cases and then followed by 
the functional test cases. if your project meets the 
performance, then those test cases are must. if the project 
meets the DB testing,then the database test cases are must. 
Differs from web based application to server based 
application.

a)	In software white box test cases and block box test 
cases are. They are
b)	In white box test cases unit test case, integration 
testing test case
c)	In block box test cases have some test cases they 
are
d)	The functional test cases
e)	Usability test cases
f)	Security test cases
g)	Performances test cases
h)	Positive test cases
i)	Negative test cases
j)	And so on


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My phone no are 9246540049 65880049 ,Hyderabad.
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If any body want full explain send the mail

hey plz dont giv all wrong answers wat ever you have 
written is wron.............
 

There three types of testcases they are 
user interface test cases
inputdomain test cases
bussiness logic test cases


plz dont creat your own test cases

First of all we do Functional testcases than validation and 
then GUI.

hey....pl don't write the wrong answers....if u guys r not 
sure pl don't answer the question for God sake don't give 
the wrong answer......

there may be n no of testcases but you have to work as per 
the requirement of the client

you will be writing test cases like
1. integration test case
2.Functional Test case
3.Non-Functional Test cases( which include security,
performance and usability)
4.User Acceptance Test cases( end to end scenario).
Validation test case:- Here all the above stated techniques
of test cases fall under validation test cases itself, there
is no seperate test case for validation, when we execute all
the above test cases we can conclude we have done the entire
validation  too.
Verificatin test cases:- after writing the entire test cases
there will be some dedicated people who review these test
cases to check whether these test cases written according to
the requirements or not, in such a case it is called
verification test case and when we are executing those test
cases it is called validation test cases.
In  a simple way expected results are verification and
actual results are validation.

Integration test case:- here we execute test cases which
just tells about the connectivity from one module to other
module and integrating one application to other application
and how the application moves from parent node to child node
and vice verse.
Functional Test case:- Here we execute test cases which
tells about the functionality of the application and talks
about the desired output to be seen. internally we have
different type of test cases when we write here like range,
output values , BVA, ECP and so on. We give input and expect
some output according to the SRS. Here we check individual
module completely by checking each and every tab , text box,
buttons and so on.

Non-Functional Test case:- Test cases related to User
friendliness like font, image, color, how easy to navigate
etc, performance related, security related  comes under here. 

User Acceptance test case:- These test cases are crucial and
very important to client side people, because these test
case talks about there business and approach of the
application to complete a particular client task. which is
also called as End-End- Business scenario test case. Here we
won;t be doing testing related to UI, Functional or
Non-Functional, we talk about business and scenario which
the application is made for.

This might give you a small ideas for your question. If you
feel this is right do respond to me and if you feel a change
in it also do respond to me stating your contradiction to
it.. which will be helpful to me also.
Hey this might help you.
when you want to do regression testing if you execute all
the above test cases related to it then it is sufficient .
No need to write further or separate test case.