-- [SOURCES]

create type sources_type as enum ('CONCEN', 'MASS', 'FLOWPACED', 'SETPOINT');

create table sources
(
  node varchar(32) primary key references _node(id)
, type sources_type not null
, strength float8 not null
, pattern varchar(32) references _pattern(id)
);

-- delete when delete node
-- unset pattern when delete pattern