+-- @tag: schema_normalization_1
+-- @description: Datenbankschema Normalisierungen
+-- @depends: release_2_6_1
+
+-- assembly-id
+CREATE SEQUENCE assembly_assembly_id_seq;
+ALTER TABLE assembly ADD COLUMN assembly_id INTEGER;
+UPDATE assembly SET assembly_id = nextval('assembly_assembly_id_seq');
+ALTER TABLE assembly ADD PRIMARY KEY( assembly_id );
+ALTER TABLE assembly ALTER assembly_id SET DEFAULT nextval('assembly_assembly_id_seq');
+
+-- shipto_primary_key
+ALTER TABLE shipto ALTER COLUMN shipto_id SET NOT NULL;
+ALTER TABLE shipto ADD PRIMARY KEY (shipto_id);
+
+-- oe_vc_foreign_keys
+--ALTER TABLE oe ADD FOREIGN KEY (customer_id) REFERENCES customer (id);
+--ALTER TABLE oe ADD FOREIGN KEY (vendor_id) REFERENCES vendor (id);
+
+-- orderitems_primary_key
+ALTER TABLE orderitems ADD PRIMARY KEY (id);
+
+-- part_unit_not_null
+UPDATE parts SET unit = 'Stck' WHERE unit IS NULL;
+ALTER TABLE parts ALTER COLUMN unit SET NOT NULL;
+
+-- makemodel_id_column
+ALTER TABLE makemodel ADD COLUMN tmp integer;
+UPDATE makemodel SET tmp = make::integer WHERE COALESCE(make, '') <> '';
+ALTER TABLE makemodel DROP COLUMN make;
+ALTER TABLE makemodel RENAME COLUMN tmp TO make;
+
+CREATE SEQUENCE makemodel_id_seq;
+ALTER TABLE makemodel ADD COLUMN id integer;
+ALTER TABLE makemodel ALTER COLUMN id SET DEFAULT nextval('makemodel_id_seq');
+UPDATE makemodel SET id = nextval('makemodel_id_seq');
+ALTER TABLE makemodel ALTER COLUMN id SET NOT NULL;
+ALTER TABLE makemodel ADD PRIMARY KEY (id);