DB_DataObject PogreSQL Sequence

Dear all I have problem with Sequence on PostgreSQL. I have created below table: CREATE TABLE "public"."news" ( "id" SERIAL, "title" VARCHAR(64) NOT NULL, "intro_text" TEXT, "full_text" TEXT, "picture" BYTEA, "created" TIMESTAMP(0) WITH TIME ZONE DEFAULT ('now'::text)::timestamp(6) with time zone, "created_by" INTEGER, "publish_up" TIMESTAMP(0) WITHOUT TIME ZONE DEFAULT ('now'::text)::timestamp(6) with time zone, "publish_down" TIMESTAMP(0) WITHOUT TIME ZONE, CONSTRAINT "news_pkey" PRIMARY KEY("id") ) WITH OIDS; Table "public.news" Column | Type | Modifiers --------------+--------------------------------+------------------------------------------------------ id | integer | not null default nextval('public.news_id_seq'::text) title | character varying(64) | not null intro_text | text | full_text | text | picture | bytea | created | timestamp(0) with time zone | default ('now'::text)::timestam p(6) with time zone created_by | integer | publish_up | timestamp(0) without time zone | default ('now'::text)::timestamp(6) with time zone publish_down | timestamp(0) without time zone | Indexes: news_pkey primary key btree (id) the Sequence created is news_id_seq. when i using DB_DataObject, DB_DataObject doen't use news_id_seq, but DB_DataObject created news_seq and using them. How to swich to default Sequence (news_id_seq)