Ending binary pattern of sqllite database

I'm creating a recovery tool to recover sqllite3 databases from a binary dump image. The starting bit pattern and string is fine and it looks like this.

53 51 4c 69 74 65 20 66 6f 72 6d 61 74 20 33 00 <<<< SQLite format 3

how can i determine the end of the db file.