The Internet Movie Database, IMDB, is highly accurate, though some mistakes have been reported in the past. IMDB receives its information from many sources, and all information is checked for consistency before it is published on the website.
Information is submitted to IMDB from industry professionals and everyday visitors to the site. Because the process of verifying information is not perfect, errors are occasionally published on the site. If a visitor notices an error, he can report it to IMDB, which then further researches the information and corrects the error. Through this process, the accuracy of the information on IMDB is constantly improving.