MeAnd23W_Triag Table

The MeAnd23W_Triag table records triangulation results for 23andMe. A row marks whether two relatives, id1 and id2, triangulate — that is, whether they share an overlapping DNA segment with each other — for the gathered profile psid. When three people all share DNA over the same segment region, that segment most likely comes from a common ancestor, which makes triangulation a useful confirmation tool.

Reserved table: This table is defined and indexed in the database (on psid, id1, id2), and the client includes an insert routine for it, but it is not part of the standard 23andMe gather flow today. Treat it as a reserved / future-use structure: it may be empty in many databases.

Column Reference

Column	Type	Description
Id	int (PK)	Auto-incrementing primary key
psid	string	The 23andMe profile ID being gathered — the perspective from which the triangulation is evaluated
id1	string	23andMe profile ID of the first relative in the pair
id2	string	23andMe profile ID of the second relative in the pair
triag	bool	Triangulation flag — true if `id1` and `id2` triangulate (share an overlapping segment) for the profile `psid`, false if they do not

Deduplication: Before inserting, the application checks for an existing row with the same psid, id1, and id2; if one already exists, the new row is skipped.

Related Tables

MeAnd23W_FIANew — the shared DNA segments whose overlap determines whether two relatives triangulate.
MeAnd23W_ICW — In Common With pairs; triangulation is the segment-level confirmation that two in-common people share the same region.
MeAnd23W_Relatives — the relative list whose psid and ehid profile IDs correspond to psid, id1, and id2 here.