Yes, it is the same film.

Then it would seem that the release year is not correct: either on imdb or tmdb.

IMDb & TMDB have different rules for release dates. Here are the original release dates listed on IMDb (it didn't have a regular release in the US until 1999):

https://www.imdb.com/title/tt0156460/releaseinfo?ref_=tt_dt_rdat

https://en.wikipedia.org/wiki/Defying_Gravity_(1997_film)

Thank you for telling me that. I had seen different release dates and it always made me wonder if i had the correct movie. Sorry for nagging about the release date, since it was my ignorance. :D

@ShariffAnck said:

Thank you for telling me that. I had seen different release dates and it always made me wonder if i had the correct movie. Sorry for nagging about the release date, since it was my ignorance. :D

You are welcome, TMDB's 'weird' rules for some things confuse me too.