diff --git a/hsarback/database/database_update.sql b/hsarback/database/database_update.sql
index e69de29..fe401f4 100644
--- a/hsarback/database/database_update.sql
+++ b/hsarback/database/database_update.sql
@@ -0,0 +1,89 @@
+CREATE SEQUENCE sepa_mandat_id_seq
+    INCREMENT BY 1
+    NO MAXVALUE
+    NO MINVALUE
+    CACHE 1;
+
+CREATE TABLE sepa_mandat (
+    sepa_mandat_id integer DEFAULT nextval(('"sepa_mandat_id_seq"'::text)::regclass) NOT NULL,
+    bp_id integer NOT NULL,
+    bank_customer character varying(50) NOT NULL,
+    bank_name character varying(50),
+    bank_iban character varying(40) NOT NULL,
+    bank_bic character varying(40) NOT NULL,
+    mandat_ref character varying(40) NOT NULL,
+    mandat_signed date NOT NULL,
+    mandat_since date NOT NULL,
+    mandat_used date,
+    mandat_until date
+);
+
+INSERT INTO sepa_mandat (bp_id, bank_customer, bank_name, bank_iban, bank_bic, mandat_ref, mandat_signed, mandat_since, mandat_used, mandat_until)
+	(SELECT bp_id, bank_customer, bank_name, bank_iban, bank_bic, mandat_ref, mandat_signed, mandat_since, mandat_used, mandat_until FROM bank_account);
+
+ALTER TABLE ONLY sepa_mandat
+    ADD CONSTRAINT pk_sepa_mandat PRIMARY KEY (sepa_mandat_id);
+
+ALTER TABLE ONLY sepa_mandat
+    ADD CONSTRAINT dateschk1 CHECK (mandat_signed <= mandat_since AND mandat_since <= mandat_until);
+
+ALTER TABLE ONLY sepa_mandat
+    ADD CONSTRAINT dateschk2 CHECK (mandat_since <= mandat_until AND mandat_since <= mandat_used AND mandat_used <= mandat_until);
+
+ALTER TABLE ONLY sepa_mandat
+    ADD CONSTRAINT fk_bank_acc_reference_business FOREIGN KEY (bp_id) REFERENCES business_partner(bp_id) ON UPDATE RESTRICT ON DELETE RESTRICT;
+
+DROP TABLE bank_account;
+
+ALTER TABLE price_list
+	ADD CONSTRAINT price_list_uniq_name UNIQUE (name);
+	
+CREATE TABLE pricelist_ref (
+    bp_id integer NOT NULL,
+    price_list character varying(40) NOT NULL
+);
+
+INSERT INTO pricelist_ref (bp_id, price_list)
+	( SELECT customer, name FROM customer_price_list_mapping, price_list WHERE id = price_list );
+
+ALTER TABLE ONLY pricelist_ref
+    ADD CONSTRAINT fk_pricelist_ref_bp FOREIGN KEY (bp_id) REFERENCES business_partner(bp_id) ON UPDATE RESTRICT ON DELETE CASCADE;
+	
+ALTER TABLE ONLY pricelist_ref
+    ADD CONSTRAINT fk_pricelist_ref_pricelist FOREIGN KEY (price_list) REFERENCES price_list(name) ON UPDATE RESTRICT ON DELETE CASCADE;
+	
+DROP TABLE customer_price_list_mapping;
+	
+ALTER TABLE contact DROP COLUMN business_contact;
+
+ALTER TABLE contact DROP COLUMN technical_contact;
+
+CREATE TABLE contactrole_ref (
+    contact_id integer NOT NULL,
+    role character varying(40) NOT NULL
+);
+
+ALTER TABLE ONLY contactrole_ref
+    ADD CONSTRAINT pk_contactrole_ref PRIMARY KEY (contact_id, role);
+    
+CREATE TABLE role ( 
+    role_name character varying(40) NOT NULL
+);
+
+ALTER TABLE ONLY role
+    ADD CONSTRAINT pk_role PRIMARY KEY (role_name);
+
+INSERT INTO role VALUES ('billing'), ('operations');
+
+ALTER TABLE ONLY contactrole_ref
+    ADD CONSTRAINT fk_contactrole_ref_role FOREIGN KEY (role) REFERENCES role(role_name);
+
+ALTER TABLE ONLY contactrole_ref
+    ADD CONSTRAINT fk_contactrole_ref_contact FOREIGN KEY (contact_id) REFERENCES contact(contact_id);
+    
+INSERT INTO contactrole_ref (contact_id, role) 
+	( SELECT contact_id, 'billing' FROM contact );
+	
+INSERT INTO contactrole_ref (contact_id, role) 
+	( SELECT contact_id, 'operations' FROM contact );
+	
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