Below is a small snippet of a database that is used to help manage a library. It has a table for the different users $($or library patrons$),$ checkouts $($where physical books are checked out and returned$),$ books $($the books in the library that can be checked out$),$ addresses $($the addresses of the users$),$ and reviews $($online review written by users$).$ The library also has a website where a user can login to browse books, reserve checkouts, and write online reviews. Note, the checkouts table indicates the date of the physical checkout and return of books $($not the online reservation of them$)$ and that reviews can ONLY be written and read online.