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Concepts are forever?

vocabularies

(Gerald Pulver) #1

My understanding is that once a concept appears in the vocabulary, it remains forever in the CONCEPT table. No-longer-valid codes will have a non-NULL “Invalid_Reason” and appropriate “Valid_End_Date”.

Is my understanding correct?


(Anna Ostropolets) #2

Yep! All correct


(Gerald Pulver) #3

Thank you Anna.


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