What is a GUID?

Definition and format

1. The globally unique identifier (guid,globally unique Identifier) is a numeric identifier generated by the algorithm with a binary length of 128 bits. GUIDs are primarily used in networks or systems that have multiple nodes, multiple computers. Ideally, no computer or computer cluster will generate two identical GUIDs.

2. The format of the GUID is "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx", where each x is a 4-bit hexadecimal number in the range of 0-9 or a-f. For example, 6F9619FF-8B86-D011-B42D-00C04FC964FF is a valid GUID value.

Features ★ When a GUID is required, it can be generated automatically by the algorithm and does not require an authoritative authority to manage. ★guid can theoretically produce the world's only value, which is convenient for future data import.

What is a GUID?