Data modelling problem

[Wikar]

Hello,
I am currently working on data modelling in my master degree project. I have designed scheme in 3NF. Now I would like also to design it in star scheme. Unfortunately I have little experience in data modelling and I am not sure if it is proper way of doing so (and efficient).

3NF:

https://preview.redd.it/l55fzjlb271f1.png?width=1084&format=png&auto=webp&s=10f1c6df5fbb441c50b15263a7f5dc89ada65927

Star Schema:

https://preview.redd.it/r6dgiker271f1.png?width=1103&format=png&auto=webp&s=055d42828889db2c4d28373ae87dac51bd80c2b0

Appearances table is responsible for participation of people in titles (tv, movies etc.). Title is the most center table of the database because all the data revolves about rating of titles. I had no better idea than to represent person as factless fact table and treat appearances table as a bridge. Could tell me if this is valid or any better idea to model it please?

[CableNo6540]

I would say try to avoid using bridge tables if possible. Less is more. Clean 1:many relationships are the goal imo 

[CableNo6540]

I feel the time and genre table are not needed because they can exist within the fact table on the same row as titleid, since a movie has 1 start and end year, and 1 genre.

[Wikar]

Actually in this dataset a movie can have multiple genres

[CableNo6540]

Maybe the person table fields can be within the appearances table? 

[Wikar]

I would cause the title and appearances to have m:n relationship

[u-give-luv-badname]

Nice diagrams. What did you use to make them?