I have experienced a problem when working in multiple browsers,
ie. When working in a web form, I open a new browser from the exising browser (control +N) and after that If i made changes in the second form and saved it, then I look in the 1st browser the changes will effect on the 1st browser also. My questions are:

1) Is this second browser gets the same session from the 1st browser.
2) due to this we can save null values in the db even there are validation restrictions, so how to solve this issue?

pls advice..