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Replace Information Model section with Best Practices section - closes #10 #267

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@benfrancis benfrancis commented Aug 24, 2022

This is a follow-up to #260 which attempts to resolve the long-running issue #10 regarding the extent to which profiles constrain the Thing Description Information model, and is a replacement for PR #125.

The work so far in #260 includes many of the constraints from the original Core Data Model section in six sub-sections of a new Common Constraints section:

  1. Security
  2. Discovery
  3. Links
  4. Errors
  5. Semantic Annotations
  6. Default Language

My proposal in this PR is to replace the content of the remaining Information Model section (what's left from the original "Core Data Model" section) with a Best Practices section which includes some of the key remaining constraints as recommendations.

The content of the current Information Model section is still very contentious and we are running out of time to agree on which constraints to keep. This proposal is a compromise which retains some of the key constraints from that section as recommendations which I think we can get quick consensus on.

I have explained the rationale behind the removal of other more rigid constraints in great detail in other issues and PRs, but I'm happy to answer any questions about constraints that others feel should be kept.


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I like the proposal of having a section under the "Common Constraints" section, which provides additional normative requirements.

However the current assertions are only recommended, which leaves it up to implementors what to do. This contradicts the OOTBI goals of the profile.
I suggest to make them mandatory and refine them to rule out these ambiguities.

Additionally, the current proposal reverts more precise language and requirements, that were introduced after long discussions in the WG. We should ensure that these agreements are preserved.

Examples include:

  • Additional clarifications on date-time formats
  • Additional clarifications on units
  • Additional clarifications on support field

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This PR is no longer needed since #272 landed.

@benfrancis benfrancis closed this Sep 7, 2022
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