Except that UUIDs by themselves don't do this at all:
> They provide a reliable way to ensure that each item, user, or piece of data has a unique identity.
It is the registration of a UUID in a database which prohibits reuse that does that. If you aren't do doing that, ensuring that each use of a UUID is not a reuse of an already assigned UUID, they are not UNIQUE.
> They provide a reliable way to ensure that each item, user, or piece of data has a unique identity.
It is the registration of a UUID in a database which prohibits reuse that does that. If you aren't do doing that, ensuring that each use of a UUID is not a reuse of an already assigned UUID, they are not UNIQUE.