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Directionality
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Describes the relationship model as directed or undirected.

Enums
`DIRECTIONALITY_UNSPECIFIED`	Default value.
`BIDIRECTIONAL`	Modeled in both directions. Primary entity (a) to related entity (b) and related entity (b) to primary entity (a).
`UNIDIRECTIONAL`	Modeled in a single direction. Primary entity (a) to related entity (b).

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Last updated 2025-03-27 UTC.