What are possible options to convert an entire ecosystem from R4 to R5?

[bdc-ehealth]

Just brainstorming, regardless of feasibility...

• Parallel systems, with one system extinguishing by gradual conversion (by practitioner?)
• Big bang Conversion of resources
• Mixed system, one system supporting both R4 and R5
• Parallel systems, with a gateway that translates R4 to R5 (new resources only R5)
• Hybrid system part of the functionality in R4, part of the functionality in R5

[bdc-ehealth]

Dimensions of the above options:

• conversion manual/automatic
• storage one/dual
• API one/dual
• functionality all-in-one/some-has-different version
• transition gradual/big-bang
• conversion yes/no

[bdc-ehealth]

Some elements of a hybrid system are described in this document: https://docs.google.com/document/d/1UUxCpMmkyr3z4_Au7x3SslKfwcb1ILLr/edit

[bdc-ehealth]

This is a test to simply compile core with fhirVersion 5.0.0 : hl7-be/core#64 and https://build.fhir.org/ig/hl7-be/core/branches/issue-64/

[bdc-ehealth]

For some strange reason, the google doc above is not editable anymore. I replaced the document by this one: https://docs.google.com/document/d/1v8U3GK-AWbVpFQg2XZ4uHPn5vWbAdJ_cyk1vE-SSiqM/edit because of new information.