One method is With the testcase itself include test data.
If bulk amount of data exist to test in various conditions, 
Keep the fields in the page as columns in excel sheet and 
give the data with various combinations.

Any other information please inform me

Aparna, iam rafi from CTS can you put it clearly, you mean 
based on the pre-requesite we have to map the test data 
thatis what you mean or ??

Rafi - Programmer analyst
CTS

hi rafi ... this is not the right way.. if you now the 
answer please give the right way... if you dont no dont 
send those stupid posts...if you are a genious give the 
proper answer dont disapoint....

MR. RAFI THIS NOT A CHAT OR LOVE MAKING SITE BE 
PROFESSIONAL AND ANSWER PROPERLY NO ONE IS INTERESTED ABOUT 
YOUR DESIGNATION OR WHAT U R

Preparing proper test data is a core part of “project test 
environment setup”. Tester cannot pass the bug 
responsibility saying that complete data was not available 
for testing. Tester should create his/her own test data 
additional to the existing standard production data. Your 
test data set should be ideal in terms of cost and time. 
  Design our test data considering following categories:
Test data set examples:
1) No data: Run your test cases on blank or default data. 
See if proper error messages are generated.

2) Valid data set: Create it to check if application is 
functioning as per requirements and valid input data is 
properly saved in database or files.

3) Invalid data set: Prepare invalid data set to check 
application behavior for negative values, alphanumeric 
string inputs.

4) Illegal data format: Make one data set of illegal data 
format. System should not accept data in invalid or illegal 
format. Also check proper error messages are generated.

5) Boundary Condition data set: Data set containing out of 
range data. Identify application boundary cases and prepare 
data set that will cover lower as well as upper boundary 
conditions.

6) Data set for performance, load and stress testing: This 
data set should be large in volume.

This way creating separate data sets for each test 
condition will ensure complete test coverage.

Preparing Test data is very important before we execute the 
test cases. Test data must be created for each and every 
test cases. Test data can be prepared with the knowledge of 
Boundary Value Analysis and equivalence class partition.
Ex: The test data for customer name field with the 
condition such as 5 to 15 chars and no special symbols 
would be
Boundary Value Analysis:
min i.e 5 chars: arthu result: system should accept
min-1 ie 4 chars: qwer, result: should prompt error message.
max ie 15 chars: qwertyuioplkjhg : system should accept.
max+1 ie 16 chars: qwedsafgtrfdsert: system should prompt 
error message.

Equivalence class partition:
include all the special symbols or numbers in the middle.: 
system should prompt error message.

Friends plzz let me know if i am wrong or u get more 
generous answer. Thank You