The exact same dog (same name, breed, date of birth, sex and owner ID) can be added, as long as tags are different. Perhaps, it would be better to give a warning to the user that the same dog exists, since tags are optional, or just display an error to prevent the user from adding the same dog.
The exact same dog (same name, breed, date of birth, sex and owner ID) can be added, as long as tags are different. Perhaps, it would be better to give a warning to the user that the same dog exists, since tags are optional, or just display an error to prevent the user from adding the same dog.