[sbd] Który ze schematów bazy danych dla biblioteki jest najodpowiedniejszy z punktu widzenia zasad projektowania baz danych. Baza powinna przechowywać informacje o klientach, książkach i wypożyczeniach (wielkie litery oznaczają klucz główny):

[FezMLG]

Source backing up the changes 🔍

"A table can have only ONE primary key; and in the table, this primary key can consist of single or multiple columns "

https://www.w3schools.com/sql/sql_primarykey.ASP

Type of change 🦄

• [x] Changing the correct answers
• [ ] Adding new question
• [ ] Fixing typos/formatting
• [ ] Other (what?)

Checklist 📝

• [x] I have copied the whole JSON contents from zdaj.se guide (if relevant)
• [x] I have added a relevant source for the changes
• [x] I have checked that all of the correct answers are marked as correct
• [x] I have changed the pull request's title to reflect the changed question
• [x] I have checked if there are no other pull requests here that change the same question

Attribution 👨🏻‍💻

• [x] I want to have my name displayed on zdaj.se near this change (not required, will be added in the future)

[bibixx]

Hmm 🤔 I have a bit of a problem with this. I'm not sure how to interpret multiple PKs in a table. I feel like they meant composite PKs in this instance which would make sense to be the most fitting.