![]() ![]() I then converted those sixteen random numbers into a HEX string in the 8-4-4-4-12 format. This was easier and didn't cause any BASIC runtime overflow errors. Instead of generating a single large random, I chose to create sixteen random numbers between one and two hundred fifty-five. Some of the algorithms that I've seen in other SDKs generate a large random number and then encode that random number into the 8-4-4-4-12 format. ![]() There is high likelihood that the UUIDs generated in small batches will be unique, but since MultiValue BASIC uses a pseudo-random generate, you can't guarantee you won't generate the same UUID more than once. Since this UUID is based around a randomly generated value, and not a sequential or managed value, there is NO guarantee that the value being generated will be unique within the file, table, or database.Īll a Version 4 UUID does is generate a UUID string in the 8-4-4-4-12 format. Random Generation of UUIDs has a flaw in it that a software developer will need to handle on their own. While a GUID doesn't follow the same specification as UUIDs, it is the same basic format. Version 4 is also commonly referred to as a GUID. Version 4 is used to generate a Unique ID based on random number generation. This article is based around the Version 4 of the RFC 4122 specification for UUIDs. There are several different versions of UUID. This is different from a sequential number that would only be unique in the file or table itself, and not across files, accounts, or databases. The intent of a UUID is to generate an ID that can be used across different databases, and will always be unique. ![]() The common format for a UUID is a string format that looks like the following: A UUID is simply a 128-bit unique value that can be expressed as either a larger number or a string. A Universally Unique Identifier (UUID) is an identifier standard used in many non-MultiValue databases and software to generate a Unique ID outside of using incremental numbers. ![]()
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