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Multiple relations between tables: duplicate or reference



I'm making a datamodel and need to have multiple relations between two tables:

The central table is 'Requests'. Each request has a 'ResponsibleUserID', 'AffectedPersonID', 'ReportingPersonID'. All of these colums contain the ID's of persons, and these ID's reference to the "PersonsAndUsers" table. How do I make the data model so I can get data from all three person/user ID's of the Request-table.


I'd prefer to not have to use 'userelationship' in DAX. So I guess I need to have 3 "PersonAndUsers" tables, so I can make a relationship with each of these tables. I duplicated the table in Power Query, but when refreshing the data, it will import the 'PersonAndUsers' data three times? How can I avoid this? Do I need to Reference in PowerQuery instead of Duplicating?


Also, each of these persons has a "DepartmentID", so the same applies to this? I will need the "Department" table three times, so each "PersonAndUsers" table can have a relation with another "Department" table? So I make thee tables: 'ResponsibleUserDepartment', 'AffectedPersonDepartment' and 'ReportingPersonDepartment'?


Thanks a lot!


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