VocApp-ValSetChanges/ValSetMenu

Changes from a Value Set Selection

The figure at right shows the various options that can be selected when a Value Set node is selected in the Value Set Navigator window, and the right mouse button is clicked. In each case, the menu selection starts a process to define changes to be applied to the selected value set. (NOTE: The first selection Create Value Set actually creates a value set as a child (sub-type) of the selected value set.) These selections are intended to cover all possible operations on a value set node. In aggregate, the functions provided include: Create or Delete a Value Set; Add or Remove codes from a Value Set; Bind, but not unbind the Value Set to a Concept Domain; and Add or Remove references from the Value Set to child value sets Further, in several cases, these operations are redundant or partially so. For example, both Create Value Set and Bind Concept Domain to Value Set allow a value set to be bound to a concept domain, but only in Create Value Set can one also define a new concept domain.

Menu selections from a value set node

Remove Value Set References

Although references is a generic term, the only kind of reference included in the Vocabulary Maintenance Language, and in the underlying Access data base tables, is a parent-child relationship whereby the reference is thought of as a subtype reference from the parent to the child.

CAUTIONS: Removing a value set reference leaves the value set and its code content in limbo. They remain part of the Code System and part of the Value Set definitions, but will not be exposed because there is no longer a parent under which they will appear. In general, a code system reference should only be removed in one of two circumstances: Where the child value set is already listed under two or more parents and the objective is to remove and not replace one of the references; or Where the goal is to move the child value set to a different parent. In this case, you will need to prepare a two-step change proposal that: Removes the parent child reference here, and Adds a value set reference from a new parent to the same child. For any other purpose, the Delete Value Set function is probably more appropriate.

Process sequence to Remove reference

Within the Value Set Navigator select the Value Set node that is the parent of the Value Set reference you wish to remove. Right click on the selected node Select Remove Value Set References (see menu at right)	Remove VS References: Menu
The wizard will present a Value Set References page (as at right) listing all of the child references held by the parent value set node you selected in the navigator. Select the child node(s) whose reference(s) you wish to remove. Multiple selections may be made by judicious use of Shift-click and Control-click in addition to just Click. When the selection list is complete, click Next (not Finish).	Remove VS References: Select child reference(s) to remove from list
The wizard presents the Value Set References to Remove page as at right. This page lists all of the selections made in the step above. Verify that this list is correct. If you need to make changes, you can click Back and you will be returned to the selection page with the previous selection showing. You can then use Control-click to add to or remove from the previous selection(s). The Cancel button will stop the change wizard, with no entries added to the proposal file. When the listed elements meet your expectations, conclude the removal steps by clicking Finish.	Remove VS References: Review list to be removed, and verify with "Finish"