security.RandomGenerator.CreateUUIDString

Creates a new universal unique identifier (UUID).

Syntax

security.RandomGenerator.CreateUUIDString()
  RETURNS STRING

Usage

This method generates an universal unique identifier and returns the value as STRING.

The generated string follows the UUID version 4 specification. Version 4 UUIDs represent a 128-bit long value in hexadecimal form: 
xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx
Where x is any hexadecimal digit and y is one of 8, 9, A, or B. There are 4 hyphen ("-") symbols which make its length equal to 36 characters.

UUIDs are widely used for a variety of purposes:

  • to generate unique random id.
  • in cryptography and hashing applications.
  • in generating random documents, addresses, etc.
Note:

UUIDs are unique across both space and time. In terms of space, they are based on a unique value in respect of all UUIDs, combined with the time generated. No centralized authority is required to administer them. While the probability that a UUID will be duplicated is not zero, the likelihood of it happening is negligible. For more information on the standard specification, see rfc4122.

Note:

This method replaces com.Util.CreateUUIDString().

In case of error, the method throws an exception and sets the status variable. Depending on the error, a human-readable description of the problem is available in the sqlca.sqlerrm register. See Error handling in GWS calls (status).