Most repository objects are inter-related in numerous ways, e.g.,
o Configuration versions contain versions of models, mappings and glossaries.
o Mappings have source and target models and glossaries
o Etc.
In order to see these relationships, one may use the View Links options in the metadata manager UI.
Steps
1. Go to MANAGE > Repository and the Repository Panel.
2. Right-click on the object to check select View Links.
A version of a repository model may have different specific links than other versions of that same model and even from the model as a whole. Be sure to Show versions if necessary.
Example
Go to the metadata manager user interface and open the Repository Panel.
Right-click on the Staging DW model and select View Links and note that it is a member of the Published configuration version and is the target of mappings.
Wait more than one hour.
Right-click on the Data Warehouse folder and select More… > Operations > Purge unused versions. Click Run Operation.