Basic Data Types

  • Keith W. Boone


All of the HL7 Version 3 data types derive their properties from the ANY data type. Common features of all of the data types are implemented here. For example, almost all HL7 data types can indicate that the value is unknown. This property is implemented in the CDATM schema through the ANY data type.


Data Type Physical Quantity Type Attribute Abstract Type Unit Expression 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


  1. 1.
    Unified Codes for Units of Measure, 2009, Regenstrief Institute, Inc. Available on the web at
  2. 2.
    RFC 5234 Augmented BNF for Syntax Specifications: ABNF, January 2008, Internet Engineering Task Force. Available on the web at

Copyright information

© Springer-Verlag London Limited 2011

Authors and Affiliations

  • Keith W. Boone
    • 1
  1. 1.RandolphUSA

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