What the c column of quad sqlite3 table is always 1?

[S04dEGR4gE]

I see the c column is always 1. If it is always 1, why it is needed? What is the meaning of 'c'? Thanks.

[Jiba]

Hello,

The c columns is the ontology identifier. If you have a single ontology, it will always be 1s. But if you load 2 ontologies, there will be 1s and 2s, etc.

Best regards,
Jean-Baptiste Lamy
MCF HDR, Laboratoire LIMICS, Université Paris 13