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- glossary - What is a UUID? - Stack Overflow
UUID is the same as GUID (Microsoft) and is part of the Distributed Computing Environment (DCE), standardized by the Open Software Foundation (OSF) As mentioned, they are intended to have a high likelihood of uniqueness over space and time and are computationally difficult to guess
- javascript - How do I create a GUID UUID? - Stack Overflow
How do I create GUIDs (globally-unique identifiers) in JavaScript? The GUID UUID should be at least 32 characters and should stay in the ASCII range to avoid trouble when passing them around I'm
- What kind of data can you extract from a UUID? - Stack Overflow
The OSSP uuid tool can decode UUIDs of all versions On Debian-based Linux systems you can use apt-get install uuid to install it; for other distributions, the package name might be different To decode a UUID, use the -d (decode) flag: uuid -d AAAAAAAA-BBBB-CCCC-DDDD-FFFFFFFFFFFF For version 1 UUIDs, this gives the MAC address and timestamp -- since that's what's in a v1 uuid
- Is there any difference between a GUID and a UUID?
Reserved, Microsoft Corporation backward compatibility Reserved for future definition According to RFC 4122, all UUID variants are "real UUIDs", then all GUIDs are real UUIDs To the literal question "is there any difference between GUID and UUID" the answer is definitely no for RFC 4122 UUIDs: no difference (but subject to the second part below)
- When should I use uuid. uuid1 () vs. uuid. uuid4 () in python?
Here is an alternative approach to UUID Though the chance of collision is infinitesimal UUID doesn't guarantee uniqueness To guarantee the uniqueness you may want to use compound key as [<system id>,<local id>] Each system participating in data sharing must have its own unique ID of the system either assigned during system set-up or obtained from a common pool of IDs Local id is a unique
- Which UUID version to use? - Stack Overflow
Which version of the UUID should you use? I saw a lot of threads explaining what each version entails, but I am having trouble figuring out what's best for what applications
- Does the UUID comparison in Java violate the UUID standard?
UUID in order of significance and according to their data type Two UUIDs are equal if and only if all the corresponding fields are equal UUIDs, as defined in this document, can also be ordered lexicographically For a pair of UUIDs, the first one follows the second if the most significant field in which the UUIDs differ is greater for the
- guid - How unique is UUID? - Stack Overflow
Version 4 is the random number UUID There's six fixed bits and the rest of the UUID is 122-bits of randomness See Wikipedia or other analysis that describe how very unlikely a duplicate is Version 3 is uses MD5 and Version 5 uses SHA-1 to create those 122-bits, instead of a random or pseudo-random number generator
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