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Allow VERSION.data to be optional to enable logical deletion

Currently VERSION.data is mandatory, meaning that even if a logical
deletion is to be represented, a data item is required. This should be
changed to allow a new version to be created in which there is no data
at all, and lifecycle_state is set to "deleted".

Status

Assignee

JeffJ

Reporter

JeffJ

Change Description

Changes proposed: - make VERSION.data 0..1 This change allows logical deletion to be supported, while retaining the integrity of the repository of VERSIONED_OBJECTs (such as an EHR), so that previous views still show the content. Due to this change, content could be deleted from other versions as well, including earlier versions and branch versions. The change does not force deletion to only be the most recent trunk version. This allows for re-instatement of content (when accidental deletion has to be rectified), but might also allow deletions when they should not occur. It is up to application software and higher level components to implement such checks. In theory, the lifecycle_state attribute should be set to the code for "deleted" if the content is deleted, but we do not force this.

Approved By

ARB

Components

Fix versions

Priority

Trivial