PK/FK spec for the consolidated core tables — core

Every ingest now emits the same core shape, so every ingest declares the same relationships. This returns that one spec in build_relationships_json()'s rels form, restricted to the tables actually present in tables — so an ingest that emits no obs_attribute does not advertise an edge to it.

Usage

core_relationships(tables)

Arguments

tables: character vector of tables the ingest writes (typically the result of core_output_tables())

Value

a list with primary_keys and foreign_keys