Hi Eshita,

You seem to be describing a many-to-many relationship, where a movie can have multiple genres and the same genre can be present in multiple movies.

To support this scenario, there is no child nor parent relationship but a junction table that holds the relationship between genres and movies, something like the MovieGenre entity in my example below having a foreign key for the Movie and another foreign key for the Genre entities:

You can read more about creating many to many relationships in OutSystems here.

Hope it helps.

Cheers,
João