領域建模

• 閱讀 Asg_RH 文件，按用例構建領域模型。
  
• 資料庫建模(E-R 模型)
  E-R模型如下圖所示
  

資料庫匯出指令碼如下：

-- MySQL Script generated by MySQL Workbench
-- Mon Apr 29 01:45:07 2018
-- Model: New Model    Version: 1.0
-- MySQL Workbench Forward Engineering

SET @[email protected]@UNIQUE_CHECKS, UNIQUE_CHECKS=0;
SET @[email protected]
 
@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0;
SET @[email protected]@SQL_MODE, SQL_MODE='TRADITIONAL,ALLOW_INVALID_DATES';

-- -----------------------------------------------------
-- Schema mydb
-- -----------------------------------------------------

-- -----------------------------------------------------
 

-- Schema mydb
-- -----------------------------------------------------
CREATE SCHEMA IF NOT EXISTS `mydb` DEFAULT CHARACTER SET utf8 ;
USE `mydb` ;

-- -----------------------------------------------------
-- Table `mydb`.`Traveler`
-- -----------------------------------------------------
CREATE TABLE
 
 IF NOT EXISTS `mydb`.`Traveler` (
  `TravelerID` INT NOT NULL,
  `gender` INT NULL DEFAULT CURRENT_TIMESTAMP,
  `Preference` VARCHAR(16) NOT NULL,
  `Full Name` VARCHAR(32) NOT NULL,
  `Email Address` VARCHAR(255) NULL,
  PRIMARY KEY (`TravelerID`))
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`Payment Tool`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`Payment Tool` (
  `PaymentToolID` INT NOT NULL,
  `Type` VARCHAR(16) NULL,
  `TravelerID` INT NULL,
  INDEX `Payment Tool` (),
  INDEX `Traveler ID_idx` (`TravelerID` ASC),
  PRIMARY KEY (`PaymentToolID`),
  CONSTRAINT `TravelerID`
    FOREIGN KEY (`TravelerID`)
    REFERENCES `mydb`.`Traveler` (`TravelerID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`Payment`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`Payment` (
  `PaymentID` INT NOT NULL,
  `PaymentToolID` INT NOT NULL,
  PRIMARY KEY (`PaymentID`, `PaymentToolID`),
  INDEX `PaymentToolID_idx` (`PaymentToolID` ASC),
  CONSTRAINT `PaymentToolID`
    FOREIGN KEY (`PaymentToolID`)
    REFERENCES `mydb`.`Payment Tool` (`PaymentToolID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`Location`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`Location` (
  `LocationID` INT NOT NULL,
  `Code` VARCHAR(45) NULL,
  `Name` VARCHAR(45) NULL,
  `Type` VARCHAR(45) NULL,
  PRIMARY KEY (`LocationID`))
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`Hotel`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`Hotel` (
  `HotelID` INT NOT NULL,
  `Name` VARCHAR(45) NULL,
  `Rating` VARCHAR(45) NULL,
  `LocationID` INT NULL,
  PRIMARY KEY (`HotelID`),
  INDEX `LocationID_idx` (`LocationID` ASC),
  CONSTRAINT `LocationID`
    FOREIGN KEY (`LocationID`)
    REFERENCES `mydb`.`Location` (`LocationID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`Room`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`Room` (
  `RoomID` INT NOT NULL,
  `Type` VARCHAR(45) NULL,
  `Price` FLOAT NULL,
  `HotelID` INT NULL,
  PRIMARY KEY (`RoomID`),
  INDEX `HotelID_idx` (`HotelID` ASC),
  CONSTRAINT `HotelID`
    FOREIGN KEY (`HotelID`)
    REFERENCES `mydb`.`Hotel` (`HotelID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`RoomState`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`RoomState` (
  `RoomStateID` INT NOT NULL,
  `Check In Date` DATETIME NULL,
  `Check Out Date` DATETIME NULL,
  `isAvailable` VARCHAR(8) NULL,
  `RoomID` INT NULL,
  PRIMARY KEY (`RoomStateID`),
  INDEX `RoomID_idx` (`RoomID` ASC),
  CONSTRAINT `RoomID`
    FOREIGN KEY (`RoomID`)
    REFERENCES `mydb`.`Room` (`RoomID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`Reservation`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`Reservation` (
  `ReservationID` INT NOT NULL,
  `TravelerID` INT NULL,
  `RoomID` INT NULL,
  `Check In Date` DATETIME NULL,
  `Check Out Date` DATETIME NULL,
  `PaymentID` INT NULL,
  `RoomState_RoomStateID` INT NOT NULL,
  PRIMARY KEY (`ReservationID`, `RoomState_RoomStateID`),
  INDEX `TraverlerID_idx` (`TravelerID` ASC),
  INDEX `RoomID_idx` (`RoomID` ASC),
  INDEX `PaymentID_idx` (`PaymentID` ASC),
  INDEX `fk_Reservation_RoomState1_idx` (`RoomState_RoomStateID` ASC),
  CONSTRAINT `TraverlerID`
    FOREIGN KEY (`TravelerID`)
    REFERENCES `mydb`.`Traveler` (`TravelerID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `RoomID`
    FOREIGN KEY (`RoomID`)
    REFERENCES `mydb`.`Room` (`RoomID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `PaymentID`
    FOREIGN KEY (`PaymentID`)
    REFERENCES `mydb`.`Payment` (`PaymentID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fk_Reservation_RoomState1`
    FOREIGN KEY (`RoomState_RoomStateID`)
    REFERENCES `mydb`.`RoomState` (`RoomStateID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;


SET [email protected]_SQL_MODE;
SET [email protected]_FOREIGN_KEY_CHECKS;
SET [email protected]_UNIQUE_CHECKS;

• 資料庫邏輯模型與領域模型的異同
  二者均是對抽象物件的視覺化表示。
  領域模型是一個商業建模範疇的概念，反映的是相關業務概念以及其關係，是使用者業務描述的高度抽象。它專注於分析問題領域本身，發掘重要的業務領域概念，並建立業務領域概念之間的關係。
  而資料庫邏輯模型是一個軟體開發領域的概念，雖然能在一定程度上表示業務體系，但是主要是為了表述資料庫中的結構。它是具體的DBMS所支援的資料模型，此模型既要面向使用者，又要面向系統 ，主要用於反映的是系統分析設計人員對資料儲存的觀點，是對概念資料模型進一步的分解和細化。該模型主要是面對開發人員的。例如，中介實體不會出現在資料庫邏輯模型中。