Oracle Sample Database

Summary: This tutorial introduces you to an Oracle sample database and shows you how to load it into the Oracle Database Server.

Introduction to the OT Oracle sample database #

We provide you with an Oracle sample database named OT, which is based on a global fictitious company that sells computer hardware, including storage, motherboards, RAM, video cards, and CPUs.

The company maintains product information, including name, description, standard cost, list price, and product line.

It also tracks the inventory information for all products, including warehouses where products are available.

Since the company operates globally, it maintains warehouses in various locations worldwide.

The company maintains a comprehensive record of all customer information, including name, address, and website. Each customer has at least one dedicated contact person with detailed information, including their name, email address, and phone number.

The company also places a credit limit on each customer to limit the amount that the customer can owe.

Whenever a customer issues a purchase order, a sales order is created in the database with the pending status. When the company ships the order, the order status updates to ‘shipped’. If the customer cancels an order, the order status is updated to canceled.

In addition to sales information, the database includes employee data with detailed information, such as name, email, phone, job title, manager, and hire date.

Oracle sample database diagram #

The following picture shows the database diagram:

Download Oracle Sample Database #

You can download the Oracle Sample Database.

After downloading the file, you need to extract it to a directory. In the zip file, you’ll find the oracle_sample_database.sql file.

Loading the sample database using SQL Developer #

Step 1. Create a User #

First, launch SQL Developer from your computer.

Second, connect to the Oracle Database server using the system account:

Second, run the following script to create a new user called c##ot and grant privileges:

-- create new user
CREATE USER c##ot IDENTIFIED BY oracle;

-- grant privileges
GRANT CONNECT, RESOURCE, DBA TO OT;Code language: PHP (php)

Step 2. Load the sample database #

First, create a new connection and use the new user (c##ot) and password (oracle) to connect to the Oracle Database Server:

Second, open the oracle_sample_database.sql file and click the Run Script to execute the statements to create tables and populating data:

Third, wait for the script to complete.

Oracle Sample Database Schema Script #

The following statements create the database objects in the sample database.

CREATE TABLE regions
  (
    region_id NUMBER GENERATED BY DEFAULT AS IDENTITY
    START WITH 5 PRIMARY KEY,
    region_name VARCHAR2( 50 ) NOT NULL
  );
-- countries table
CREATE TABLE countries
  (
    country_id   CHAR( 2 ) PRIMARY KEY  ,
    country_name VARCHAR2( 40 ) NOT NULL,
    region_id    NUMBER                 , -- fk
    CONSTRAINT fk_countries_regions FOREIGN KEY( region_id )
      REFERENCES regions( region_id ) 
      ON DELETE CASCADE
  );

-- location
CREATE TABLE locations
  (
    location_id NUMBER GENERATED BY DEFAULT AS IDENTITY START WITH 24 
                PRIMARY KEY       ,
    address     VARCHAR2( 255 ) NOT NULL,
    postal_code VARCHAR2( 20 )          ,
    city        VARCHAR2( 50 )          ,
    state       VARCHAR2( 50 )          ,
    country_id  CHAR( 2 )               , -- fk
    CONSTRAINT fk_locations_countries 
      FOREIGN KEY( country_id )
      REFERENCES countries( country_id ) 
      ON DELETE CASCADE
  );
-- warehouses
CREATE TABLE warehouses
  (
    warehouse_id NUMBER 
                 GENERATED BY DEFAULT AS IDENTITY START WITH 10 
                 PRIMARY KEY,
    warehouse_name VARCHAR( 255 ) ,
    location_id    NUMBER( 12, 0 ), -- fk
    CONSTRAINT fk_warehouses_locations 
      FOREIGN KEY( location_id )
      REFERENCES locations( location_id ) 
      ON DELETE CASCADE
  );
-- employees
CREATE TABLE employees
  (
    employee_id NUMBER 
                GENERATED BY DEFAULT AS IDENTITY START WITH 108 
                PRIMARY KEY,
    first_name VARCHAR( 255 ) NOT NULL,
    last_name  VARCHAR( 255 ) NOT NULL,
    email      VARCHAR( 255 ) NOT NULL,
    phone      VARCHAR( 50 ) NOT NULL ,
    hire_date  DATE NOT NULL          ,
    manager_id NUMBER( 12, 0 )        , -- fk
    job_title  VARCHAR( 255 ) NOT NULL,
    CONSTRAINT fk_employees_manager 
        FOREIGN KEY( manager_id )
        REFERENCES employees( employee_id )
        ON DELETE CASCADE
  );
-- product category
CREATE TABLE product_categories
  (
    category_id NUMBER 
                GENERATED BY DEFAULT AS IDENTITY START WITH 6 
                PRIMARY KEY,
    category_name VARCHAR2( 255 ) NOT NULL
  );

-- products table
CREATE TABLE products
  (
    product_id NUMBER 
               GENERATED BY DEFAULT AS IDENTITY START WITH 289 
               PRIMARY KEY,
    product_name  VARCHAR2( 255 ) NOT NULL,
    description   VARCHAR2( 2000 )        ,
    standard_cost NUMBER( 9, 2 )          ,
    list_price    NUMBER( 9, 2 )          ,
    category_id   NUMBER NOT NULL         ,
    CONSTRAINT fk_products_categories 
      FOREIGN KEY( category_id )
      REFERENCES product_categories( category_id ) 
      ON DELETE CASCADE
  );
-- customers
CREATE TABLE customers
  (
    customer_id NUMBER 
                GENERATED BY DEFAULT AS IDENTITY START WITH 320 
                PRIMARY KEY,
    name         VARCHAR2( 255 ) NOT NULL,
    address      VARCHAR2( 255 )         ,
    website      VARCHAR2( 255 )         ,
    credit_limit NUMBER( 8, 2 )
  );
-- contacts
CREATE TABLE contacts
  (
    contact_id NUMBER 
               GENERATED BY DEFAULT AS IDENTITY START WITH 320 
               PRIMARY KEY,
    first_name  VARCHAR2( 255 ) NOT NULL,
    last_name   VARCHAR2( 255 ) NOT NULL,
    email       VARCHAR2( 255 ) NOT NULL,
    phone       VARCHAR2( 20 )          ,
    customer_id NUMBER                  ,
    CONSTRAINT fk_contacts_customers 
      FOREIGN KEY( customer_id )
      REFERENCES customers( customer_id ) 
      ON DELETE CASCADE
  );
-- orders table
CREATE TABLE orders
  (
    order_id NUMBER 
             GENERATED BY DEFAULT AS IDENTITY START WITH 106 
             PRIMARY KEY,
    customer_id NUMBER( 6, 0 ) NOT NULL, -- fk
    status      VARCHAR( 20 ) NOT NULL ,
    salesman_id NUMBER( 6, 0 )         , -- fk
    order_date  DATE NOT NULL          ,
    CONSTRAINT fk_orders_customers 
      FOREIGN KEY( customer_id )
      REFERENCES customers( customer_id )
      ON DELETE CASCADE,
    CONSTRAINT fk_orders_employees 
      FOREIGN KEY( salesman_id )
      REFERENCES employees( employee_id ) 
      ON DELETE SET NULL
  );
-- order items
CREATE TABLE order_items
  (
    order_id   NUMBER( 12, 0 )                                , -- fk
    item_id    NUMBER( 12, 0 )                                ,
    product_id NUMBER( 12, 0 ) NOT NULL                       , -- fk
    quantity   NUMBER( 8, 2 ) NOT NULL                        ,
    unit_price NUMBER( 8, 2 ) NOT NULL                        ,
    CONSTRAINT pk_order_items 
      PRIMARY KEY( order_id, item_id ),
    CONSTRAINT fk_order_items_products 
      FOREIGN KEY( product_id )
      REFERENCES products( product_id ) 
      ON DELETE CASCADE,
    CONSTRAINT fk_order_items_orders 
      FOREIGN KEY( order_id )
      REFERENCES orders( order_id ) 
      ON DELETE CASCADE
  );
-- inventories
CREATE TABLE inventories
  (
    product_id   NUMBER( 12, 0 )        , -- fk
    warehouse_id NUMBER( 12, 0 )        , -- fk
    quantity     NUMBER( 8, 0 ) NOT NULL,
    CONSTRAINT pk_inventories 
      PRIMARY KEY( product_id, warehouse_id ),
    CONSTRAINT fk_inventories_products 
      FOREIGN KEY( product_id )
      REFERENCES products( product_id ) 
      ON DELETE CASCADE,
    CONSTRAINT fk_inventories_warehouses 
      FOREIGN KEY( warehouse_id )
      REFERENCES warehouses( warehouse_id ) 
      ON DELETE CASCADE
  );Code language: SQL (Structured Query Language) (sql)