diff --git a/model/ddl.sql b/model/ddl.sql
index 5d5cf82..0e93fd8 100644
--- a/model/ddl.sql
+++ b/model/ddl.sql
@@ -97,9 +97,8 @@ CREATE TABLE PUBLIC.TOPOLOGIC (
     ID BIGSERIAL PRIMARY KEY,
     UUID_FROM UUID NOT NULL,
     UUID_TO UUID NOT NULL,
-    FROM_PIN UUID NOT NULL,
-    TO_PIN UUID NOT NULL,
-    FLAG INTEGER NOT NULL DEFAULT 0,
+    CONTEXT JSONB NOT NULL DEFAULT '{}', 
+    FLAG INTEGER NOT NULL DEFAULT 1,
     DESCRIPTION VARCHAR(512) NOT NULL DEFAULT '',
     OP INTEGER NOT NULL DEFAULT -1,
     TS TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP 
diff --git a/model/ddl_3_topologic.sql b/model/ddl_3_topologic.sql
index 036ff5e..b59e8bd 100644
--- a/model/ddl_3_topologic.sql
+++ b/model/ddl_3_topologic.sql
@@ -10,9 +10,8 @@ CREATE TABLE IF NOT EXISTS public.topologic
     id integer NOT NULL DEFAULT nextval('topologic_id_seq'::regclass),
     uuid_from uuid,
     uuid_to uuid,
-    from_pin uuid,
-    to_pin uuid,
-    flag integer DEFAULT 0,
+    context jsonb,
+    flag integer DEFAULT 1,
     description character varying(512) COLLATE pg_catalog."default",
     op integer NOT NULL DEFAULT '-1'::integer,
     ts timestamp with time zone NOT NULL DEFAULT CURRENT_TIMESTAMP,