A SNOMED CT identifier,between 6 and 18 digits long, as described in 5.2. SCTID Representation .

A Universally Unique Identifier is a 128-bit unsigned generated using a standard algorithm.

• UUIDs are represented as strings of hexadecimal characters split by - characters as points specified by the UUID standard.

Integer

UTF-8 text of a specified length.

A Boolean value, represented as one of two possible integer values (1 = true, 0 = false).

A date and time format expressed in line the basic representation specified in the ISO 8601 standard.

• Where only date is required the format is YYYYMMDD (e.g. 20180125 refers to 25th January 2018)
• Where a time is also required the YYYYMMDDThhmmssZ (e.g. 20180125T123000Z refers to 12:30 UTC on 25th January 2018)
• The time should be expressed as UTC, as indicated by the trailing "Z".