UserStories : Favourite App - backend

As a user I can create a favourite link to a dog
As a user I can read a list of favourite connections
As a user I can look at a specific favourite connection
As a user I get an error if I put in an invalid favourite ID
As a user I can remove a favourite connection that I own
As a user I can't delete a favourite connection that I don't own
As a database I can't store duplicate connections so that if something is deleted there isn't an old copy

RachWalm / dog-api