 
 CREATE TABLE node (
     id integer NOT NULL,
-    label character varying NOT NULL,
+    label character varying NOT NULL UNIQUE,
     project_id integer,
     obm_id integer NOT NULL
 );


CREATE TABLE "user" (
    id integer NOT NULL,
    label character varying NOT NULL,
    is_admin boolean NOT NULL,
    hashed_password character varying
);


CREATE TABLE network (
    id integer NOT NULL,
    label character varying NOT NULL UNIQUE,
    creator_id integer,
    access_id integer,
    allocated boolean,
