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Data & Analytics · Advanced

Bridge Table

A table that resolves a many-to-many relationship between a fact and a dimension, or handles multivalued dimensions.

Definition

Bridge tables handle cases such as accounts with several holders or patients with several diagnoses, sometimes with weighting factors to avoid double counting. In Power BI they often require bidirectional filtering on one relationship.

Exam tip

Totals that double-count through a many-to-many bridge are expected; the fix is weighting factors or careful measure design.

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