diff --git a/backend/src/main/resources/schema_old.sql b/backend/src/main/resources/schema_old.sql
new file mode 100644
index 0000000..573e44a
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+++ b/backend/src/main/resources/schema_old.sql
@@ -0,0 +1,303 @@
+/**
+ Model : NorthWind
+**/
+
+DROP SCHEMA IF EXISTS northwind;
+
+CREATE SCHEMA northwind;
+USE northwind;
+
+/* Table: user (Application Users) */
+CREATE TABLE user (
+    user_id     NVARCHAR(20) NOT NULL,
+    password    NVARCHAR(255) NOT NULL,
+    first_name  NVARCHAR(50) ,
+    last_name   NVARCHAR(50) ,
+    email       NVARCHAR(70) ,
+    security_provider_id INT ,
+    default_customer_id  INT ,
+    company     NVARCHAR(50) ,
+    phone       NVARCHAR(20) ,
+    address1    NVARCHAR(100),
+    address2    NVARCHAR(100),
+    country     NVARCHAR(20) ,
+    postal      NVARCHAR(20) ,
+    role        NVARCHAR(20) ,
+    other_roles NVARCHAR(80) ,
+    is_active   TINYINT  ,
+    is_blocked  TINYINT  ,
+    secret_question     NVARCHAR(100),
+    secret_answer       NVARCHAR(100),
+    enable_beta_testing TINYINT,
+    enable_renewal      TINYINT,
+    CONSTRAINT user_id PRIMARY KEY(user_id)
+);
+
+/* Table: customers */
+CREATE TABLE customers (
+  id              INT NOT NULL,
+  last_name       VARCHAR(50) ,
+  first_name      VARCHAR(50) ,
+  email           VARCHAR(50) ,
+  company         VARCHAR(50) ,
+  phone           VARCHAR(25) ,
+  address1        VARCHAR(150),
+  address2        VARCHAR(150),
+  city            VARCHAR(50) ,
+  state           VARCHAR(50) ,
+  postal_code     VARCHAR(15) ,
+  country         VARCHAR(50) ,
+  PRIMARY KEY (id)
+);
+
+/* Table: employees */
+CREATE TABLE employees (
+  id              INT NOT NULL,
+  last_name       VARCHAR(50) ,
+  first_name      VARCHAR(50) ,
+  email           VARCHAR(50) ,
+  avatar          VARCHAR(250) ,
+  job_title       VARCHAR(50) ,
+  department      VARCHAR(50) ,
+  manager_id      INT ,
+  phone           VARCHAR(25) ,
+  address1        VARCHAR(150),
+  address2        VARCHAR(150),
+  city            VARCHAR(50) ,
+  state           VARCHAR(50) ,
+  postal_code     VARCHAR(15) ,
+  country         VARCHAR(50) ,
+  PRIMARY KEY (id)
+);
+
+/* Table: orders */
+CREATE TABLE orders (
+  id              INT NOT NULL,
+  employee_id     INT ,
+  customer_id     INT ,
+  order_date      DATETIME ,
+  shipped_date    DATETIME ,
+  ship_name       VARCHAR(50) ,
+  ship_address1   VARCHAR(150) ,
+  ship_address2   VARCHAR(150) ,
+  ship_city       VARCHAR(50) ,
+  ship_state      VARCHAR(50) ,
+  ship_postal_code VARCHAR(50) ,
+  ship_country    VARCHAR(50) ,
+  shipping_fee    DECIMAL(19,4) NULL DEFAULT '0.0000',
+  payment_type    VARCHAR(50) ,
+  paid_date       DATETIME ,
+  order_status    VARCHAR(25),
+  PRIMARY KEY (id)
+);
+
+/* Table: order_details */
+CREATE TABLE order_items (
+  order_id            INT NOT NULL,
+  product_id          INT ,
+  quantity            DECIMAL(18,4) NOT NULL DEFAULT '0.0000',
+  unit_price          DECIMAL(19,4) NULL DEFAULT '0.0000',
+  discount            DECIMAL(19,4) NULL DEFAULT '0.0000',
+  order_item_status   VARCHAR(25),
+  date_allocated      DATETIME ,
+  PRIMARY KEY (order_id, product_id)
+);
+
+/* Table: products */
+CREATE TABLE products (
+  id              INT NOT NULL,
+  product_code    VARCHAR(25) ,
+  product_name    VARCHAR(50) ,
+  description     VARCHAR(250),
+  standard_cost   DECIMAL(19,4) NULL DEFAULT '0.0000',
+  list_price      DECIMAL(19,4) NOT NULL DEFAULT '0.0000',
+  target_level    INT ,
+  reorder_level   INT ,
+  minimum_reorder_quantity INT ,
+  quantity_per_unit VARCHAR(50) ,
+  discontinued    TINYINT NOT NULL DEFAULT '0',
+  category        VARCHAR(50),
+  PRIMARY KEY (id)
+);
+
+
+/* Foreign Key: orders */
+ALTER TABLE orders ADD CONSTRAINT fk_orders__customers FOREIGN KEY (customer_id) REFERENCES customers(id);
+ALTER TABLE orders ADD CONSTRAINT fk_orders__employees FOREIGN KEY (employee_id) REFERENCES employees(id);
+/* Foreign Key:  order_items */
+ALTER TABLE order_items ADD CONSTRAINT fk_order_items__orders      FOREIGN KEY (order_id) REFERENCES orders(id);
+ALTER TABLE order_items ADD CONSTRAINT fk_order_items__products    FOREIGN KEY (product_id) REFERENCES products(id);
+
+/* Views */
+CREATE OR REPLACE VIEW order_info AS
+select o.id as order_id
+ , o.order_date
+ , o.order_status
+ , o.paid_date
+ , o.payment_type
+ , o.shipped_date
+ , o.shipping_fee
+ , o.ship_name
+ , o.ship_address1
+ , o.ship_address2
+ , o.ship_city
+ , o.ship_state
+ , o.ship_postal_code
+ , o.ship_country
+ , o.customer_id
+ , o.employee_id
+ , concat(c.first_name, ' ', c.last_name) as customer_name
+ , c.phone customer_phone
+ , c.email customer_email
+ , c.company as customer_company
+ , concat(e.first_name, ' ', e.last_name) as employee_name
+ , e.department employee_department
+ , e.job_title  employee_job_title
+  From   orders o
+       , employees e
+       , customers c
+ where o.employee_id  = e.id
+   and o.customer_id  = c.id;
+
+CREATE OR REPLACE VIEW order_details AS
+select oi.order_id
+  , oi.product_id
+  , oi.quantity
+  , oi.unit_price
+  , oi.discount
+  , oi.date_allocated
+  , oi.order_item_status
+  , o.order_date
+  , o.order_status
+  , o.paid_date
+  , o.payment_type
+  , o.shipped_date
+  , o.shipping_fee
+  , o.ship_name
+  , o.ship_address1
+  , o.ship_address2
+  , o.ship_city
+  , o.ship_state
+  , o.ship_postal_code
+  , o.ship_country
+  , p.product_code
+  , p.product_name
+  , p.category
+  , p.description
+  , p.list_price
+  , o.customer_id
+  , concat(c.first_name, ' ', c.last_name)  as customer_name
+  , c.phone   as customer_phone
+  , c.email   as customer_email
+  , c.company as customer_company
+  , o.employee_id
+  , concat(e.first_name, ' ', e.last_name) as employee_name
+  , e.department as employee_department
+  , e.job_title  as employee_job_title
+  From   orders o
+       , products p
+       , order_items oi
+       , employees e
+       , customers c
+ where oi.order_id    = o.id
+   and oi.product_id  = p.id
+   and o.employee_id  = e.id
+   and o.customer_id  = c.id;
+
+CREATE OR REPLACE VIEW customer_orders AS
+select o.order_date, o.order_status, o.paid_date, o.payment_type, o.shipping_fee, o.customer_id
+       , c.first_name customer_first_name, c.last_name  customer_last_name, c.phone customer_phone, c.email customer_email, c.company
+  from orders o,customers c
+ where o.customer_id  = c.id;
+
+CREATE OR REPLACE VIEW employee_orders AS
+select o.order_date, o.order_status, o.paid_date, o.payment_type, o.shipping_fee, o.employee_id
+       , e.first_name employee_first_name, e.last_name  employee_last_name,  e.email employee_email, e.department
+  from orders o,employees e
+ where o.customer_id  = e.id;
+ 
+ 
+ /* REAL_NET */
+ CREATE TABLE RN_INSTRUCTOR (
+ 	ID VARCHAR(20) NOT NULL AUTO_INCREMENT,
+ 	FIRST_NAME VARCHAR(20) NOT NULL, 
+ 	LAST_NAME VARCHAR(20) NOT NULL, 
+ 	EMAIL VARCHAR(20) NOT NULL, 
+ 	CREATED_AT DATETIME, 
+ 	UPDATED_AT DATETIME,
+ 	PRIMARY KEY (id)
+ );
+ 
+ /*==== EXTENSION FIELD ===*/
+ CREATE TABLE RN_EXT_FIELD_T (
+   ID int(11) NOT NULL AUTO_INCREMENT,
+   TYPE VARCHAR(20),
+   DATA_TYPE VARCHAR(20),
+   FIELD_NAME VARCHAR(20),
+   MAPPING VARCHAR(20),
+   FORM_CODE VARCHAR(20),
+   IS_ACTIVE BOOLEAN,
+   ACCOUNT_ID VARCHAR(20),
+   CREATED_AT DATETIME, 
+   UPDATED_AT DATETIME,
+   CREATED_BY  VARCHAR(20),
+   UPDATED_BY VARCHAR(20),
+   PRIMARY KEY (ID)
+);
+ 
+/*========= lookup ========
+CREATE TABLE `rn_lookup_values_t` (
+  `ID` int(11) NOT NULL AUTO_INCREMENT,
+  `LOOKUP_CODE` longtext,
+  `MEANING` longtext,
+  `DESCRIPTION` longtext,
+  `LOOKUP_TYPE` longtext,
+  `ACTIVE_START_DATE` datetime DEFAULT NULL,
+  `ACTIVE_END_DATE` datetime DEFAULT NULL,
+  `ENABLED_FLAG` longtext,
+  `CREATED_BY` int(11) DEFAULT NULL,
+  `CREATION_DATE` datetime DEFAULT NULL,
+  `LAST_UPDATED_BY` int(11) DEFAULT NULL,
+  `LAST_UPDATE_DATE` datetime DEFAULT NULL
+  PRIMARY KEY (`ID`)
+); */
+ 
+ 
+ 
+/*========= LOGGING ========
+
+DROP TABLE logging_event_exception IF EXISTS;
+DROP TABLE logging_event_property IF EXISTS;
+DROP TABLE logging_event IF EXISTS;
+
+CREATE TABLE logging_event (
+  timestmp BIGINT NOT NULL,
+  formatted_message LONGVARCHAR NOT NULL,
+  logger_name VARCHAR(256) NOT NULL,
+  level_string VARCHAR(256) NOT NULL,
+  thread_name VARCHAR(256),
+  reference_flag SMALLINT,
+  arg0 VARCHAR(256),
+  arg1 VARCHAR(256),
+  arg2 VARCHAR(256),
+  arg3 VARCHAR(256),
+  caller_filename VARCHAR(256), 
+  caller_class VARCHAR(256), 
+  caller_method VARCHAR(256), 
+  caller_line CHAR(4),
+  event_id IDENTITY NOT NULL);
+
+
+CREATE TABLE logging_event_property (
+  event_id BIGINT NOT NULL,
+  mapped_key  VARCHAR(254) NOT NULL,
+  mapped_value LONGVARCHAR,
+  PRIMARY KEY(event_id, mapped_key),
+  FOREIGN KEY (event_id) REFERENCES logging_event(event_id));
+
+CREATE TABLE logging_event_exception (
+  event_id BIGINT NOT NULL,
+  i SMALLINT NOT NULL,
+  trace_line VARCHAR(256) NOT NULL,
+  PRIMARY KEY(event_id, i),
+  FOREIGN KEY (event_id) REFERENCES logging_event(event_id)); */ 
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