Issue 2694 update schema design docs #3215
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Signed-off-by: Robin Arnold <robin.arnold@ibm.com>
Signed-off-by: Robin Arnold <robin.arnold@ibm.com>
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I love the new schema image...I think I'll be frequently pointing folks at that one. |
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| To optimize certain queries, the `RESOURCE_ID` for the most recent version of a resource is referenced from the `[resourceType]_LOGICAL_RESOURCES` table with the `CURRENT_RESOURCE_ID` column. This is not enforced by a foreign key because the `[resourceType]_LOGICAL_RESOURCES` record is created first and already contains the intended value of the current `RESOURCE_ID` which has been obtained from a sequence. This approach avoids an extra `UPDATE` on `[resourceType]_LOGICAL_RESOURCES` which is expensive during ingestion. | ||
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| The IBM FHIR Server uses soft-delete when processing a FHIR `DELETE` interaction. This creates a new version of the resource with a minimal resource data value and the `IS_DELETED` flag = `Y`. Soft-deletes do not delete existing database records. The Patient Erase custom operation can be used to remove all traces of a patient from a database. |
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seems to duplicate the content toward the end of line 89, but maybe its fine?
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…ster branch Signed-off-by: Robin Arnold <robin.arnold@ibm.com>
Signed-off-by: Robin Arnold <robin.arnold@ibm.com>
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