-- The collections a part of the tree answers from when a request names
-- none (BACKLOG F3): on an organization, team, project or key, the narrowest
-- one that has any winning. PostgreSQL only, as the collections are.
CREATE TABLE kb_defaults (
  scope       TEXT NOT NULL,
  scope_id    TEXT NOT NULL,
  -- Collection IDs, comma separated, in the order given.
  collections TEXT NOT NULL,
  added_at    BIGINT NOT NULL,
  added_by    TEXT NOT NULL DEFAULT '',
  PRIMARY KEY (scope, scope_id)
);