text: CREATE TABLE projects
  (
      id    uuid NOT NULL
          CONSTRAINT projects_pk PRIMARY KEY,
      title text NOT NULL
  );
  
  CREATE TABLE todos
  (
      id           uuid NOT NULL
          CONSTRAINT todos_pk PRIMARY KEY,
      project_id   uuid NOT NULL
          CONSTRAINT todos_projects_id_fk REFERENCES projects (id),
      title        text NOT NULL,
      completed_at timestamp WITH TIME ZONE
  );
  