Android Database Programming

Suppose in first trial I am using SQLiteOpenHelper. I create database, create new table, insert some data to that database, then run it. In the second trial I edit some feature that does not have a link with database (e.g.:layout kind of stuff), then I run it again.

My Question is when I run the second time, does the system or android application create the same exact database again or not?

In my point of view, I think it does create again, more like replace the old ones. Is not that correct ?

Thanks