Other way than using a self-reference in one entity

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Hi all I’m trying to connect rows  to each other in one and the same entity (without using the self-reference). e.g. I want to add persons in entity Person. These persons are family from each other. I want to be able to link them to each other in the same entity without using the self-reference tool provided by Mendix   Any idea on how to do this? Thanks!  
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