Modelling Multi valued attributes in dimensions in Power BI

Hi vividvimu 

Yes you can use bidirectional relationships if you ensure that There's only one path between tables no ambiguity and The cardinality supports it (i.e., 1:* between Student and others).

Student[Student Id] → Student Programs[Student Id] (One-to-Many, Bidirectional)

Student[Student Id] → Student Language Proficiency[Student Id] (One-to-Many, Bidirectional)

Using bidirectional filters is fine if you have only one clear path between the tables. Avoid Circular relationships & Multiple paths between two tables (Power BI will disable relationships or throw ambiguity errors)

Large datasets where bi-directionality can cause performance issues

If bidirectional filtering is not safe or causes issues, use the UNION + TREATAS technique.