Create DataGroup workflow
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Every registered user in the model data explorer can create a DataGroup and
become an owner it. Once a DataGroup object has been created, several
DataGroupUserGroup objects are created, one for each role that a user can
have in a datagroup (see Users and data groups and
DataGroup Relations). Furthermore, we create one
DataGroupNode per graph type, see Data groups and
DataGroup Permission Graphs.
The user who created the DataGroup is then added as an owner for this
data group and automatically added to the corresponding DataGroupUserGroup.
This workflow with DataGroupUserGroups provides an efficient workflow as
permissions to datasets, etc. are granted to the user group and not to the
individual owner. As such, if a user does stops being an owner, data editor,
etc. we just remove him or her from the corresponding DataGroupUserGroups
and he or she looses all the permissions.
A more schematic illustration of this workflow is displayed in the figure Sequence Diagram to create a DataGroup.
Sequence Diagram to create a DataGroup