I Have faced one question in interview that
Row Level Security --How we able to do row level security to particular timeline to particular department
Ex: I am having Sales department in my company to the particular department i need to give access to that particular time line then it should get automatically expire.
Here is a great article on Row level security.
Basically it comes down to a user filter. The username must be in your datasource and then you do a sql pull where username = the one logged in.