HL7 Version 3 Data Type Redesign Project

The HL7 control query committee on its September 1998 meeting in San Diego set up a task force to work out a redesign proposal for HL7 version 3 data types. Work products will be a proposal document that will describe the new data types, the rationale for the design decisions and hints and caveats how to use the new types. We will also work out a meta model of data types so that this work can plug seamlessly into the other version 3 work maintained by Woody Beeler's tool set. We will also use UML and Rose to build information models.

Work document

I will maintain a work document that will be completed as we move along in our discussions. The current document is a very first draft and quite messy. It's main achievement is to combine a table of contents to be used as a work list and that it includes the slides discussed in San Diego. Only a few secions are written yet and a lot of text that is present will probably change drastically or will be removed. The document is available as PDF (need Acrobat 3) or PS. The preface tells how the document is maintained and how you can make contributions.

Slides

All graphics accessible from here are: Copyright © 1998 Regenstrief Institute. All rights reserved.

Conference Call Minutes

  1. Thursday, October 8, 1998, 11:00 to 12:00 AM EDT.
  2. Thursday, October 15, 1998, 11:00 to 12:30 AM EDT.
  3. Thursday, October 22, 1998, 11:00 to 12:30 AM EDT.
  4. Thursday, October 29, 1998, 11:00 to 12:30 AM EDT.
  5. Thursday, November 5, 1998, 11:00 to 12:30 AM EDT. (coming soon)
  6. Monday, November 23, 1998, 11:00 to 12:30 AM EDT.

Next conference call is next Monday, November 30, 1998.

Agenda items are:

  1. reconsider the rational data type (should we define "ratio of floating point numbers" instead?)
  2. Measurements (physical quantities)
  3. Currency (economical quantities)
  4. Time
  5. Ordinals

Participants are invited to read and think about the three slides on the agenda items 2, 4 and 5.

That number again is: 1 800 869 6684