This dataset contains 4669820 ratings from 1499238 users to 351109 movies on the imdb.com website. This data is collected from reviews (https://www.imdb.com/review/rw0000001/). Each row in this dataset is as follows:

userID, movieID, rating, review date

For example : 

ur18238764, tt2177461, 9, 22 January 2019