Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about Unique identifier?
Summarize this article for a 10 years old
A unique identifier (UID) is an identifier that is guaranteed to be unique among all identifiers used for those objects and for a specific purpose. The concept was formalized early in the development of computer science and information systems. In general, it was associated with an atomic data type.