Field Data Types

The following data types are used in the release files :

Table 2. Data Types Used in Release Files
Data Type	Description
SCTID	A SNOMED CT identifier, between 6 and 18 digits long, as described in SCTID Representation .
UUID	Universally Unique Identifier, 128-bit unsigned integer
Integer	32-bit signed integer .
String	UTF-8 text of a specified length.
Boolean	Boolean value, represented as one of two possible integer values ('1' for true, '0' for false).
Time	For release files, a time format down to day of the year is used, having an ISO 8601 basic representation of YYYYMMDD . For development interchange formats, an ASCII text field in the ISO 8601 basic format YYYYMMDDThhmmss Z will be used. The time zone will always be UTC, as indicated by the trailing "Z". (e.g. 20080602T223000Z represents 10:30pm June 2 2008 UTC.)