Oracle示例資料庫

本教程向您介紹Oracle示例資料庫，並提供鏈接供下載。

Oracle示例資料庫簡介

我們為您提供一個名為 OT 的Oracle示例資料庫，它基於全球虛擬公司，銷售電腦硬體，包括存儲，主板，RAM，視頻卡和CPU。

公司保存產品資訊，如：名稱，描述標準成本，標價，產品線。它還跟蹤所有產品的庫存資訊，包括產品可用的倉庫。由於該公司在全球運營，因此在世界各地擁有倉庫。

公司記錄所有客戶資訊，包括姓名，地址和網站。 每個客戶至少有一個聯繫人，包括姓名，電子郵件和電話等詳細資訊。公司還對每位客戶設置了信用限額，以限制客戶可能欠的金額。

只要客戶發出採購訂單，就會在資料庫中創建具有待處理狀態的銷售訂單。當公司運送訂單時，訂單狀態變成 - 運送。如果客戶取消訂單，則訂單狀態將被 - 取消。

除銷售資訊外，員工數據還記錄了一些基本資訊，如姓名，電子郵件，電話，職位，經理和雇用日期。

Oracle示例資料庫圖

以下舉例說明示例資料庫圖表：

下載Oracle示例資料庫

以zip檔格式下載以下示例資料庫：

下載檔後，然後提取它。該zip檔包含以下的SQL檔：

• 檔：ot_create_user.sql - 用於創建OT用戶和授予許可權。
• 檔：ot_schema.sql - 用於創建資料庫對象，如表，約束等
• 檔：ot_data.sql - 用於將數據加載到表中。
• 檔：ot_drop.sql - 用於刪除示例資料庫中的所有對象。

以上檔可通過加入 Oracle資料庫技術QQ群(175248146)，從群檔裏找到示例資料庫(oraok.com)_11g.v1.zip檔並下載。

以下是用於創建資料庫對象的語句。

-- regions
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                 ,
    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 )               ,
    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 ),
    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 )        ,
    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,
    status      VARCHAR( 20 ) NOT NULL ,
    salesman_id NUMBER( 6, 0 )         ,
    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 )                                ,
    item_id    NUMBER( 12, 0 )                                ,
    product_id NUMBER( 12, 0 ) NOT NULL                       ,
    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 )        ,
    warehouse_id NUMBER( 12, 0 )        ,
    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
);

在本教學中，我們介紹了Oracle示例資料庫並展示了如何下載它。現在，您應該準備好在Oracle資料庫伺服器中創建示例資料庫以供接下來的章節中練習。