Hello everybody, hello Dani:icon_cool:!
I'm doing my homework of 'Data Base', exactly in the chapter: Relational Algebra, here I am, I can't find a specific relation (or the SQL corresponding query) :icon_confused:!
Here the schema:
MEAL(guest,date);
MENU(dish,date);
PREFERENCE(person,dish);
I wanna find the SQL query (or the relation in Relational Algebra):"the guests who attended to every dish".
I hope find a solution or a lil hint:icon_neutral:!
Greeting:icon_rolleyes:!