I heard from someone telling me that it's a angelina jolie movie and in the movie the official existence of the woman is erased from the directories or something like this... I'm curious to watch the movie,does anyone knows the title to it?

There's a film called 'hackers' from 1995 - maybe this is it?
Hackers (1995) - IMDb (http://www.imdb.com/title/tt0113243/)
(But you know, for some reason my mind went to the movie The Net (from the same year) with Sandra Bullock. In The Net I remember all her personal info is erased - she has no way of proving who she is, they create a fake police record on her, etc. - any possibility this is the movie you're looking for instead?
The Net (1995) - IMDb (http://www.imdb.com/title/tt0113957/) )