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Er Diagram
Posted by: Dennis Onggo
Date: April 10, 2018 06:52AM

Hello guys
I'm new here.I got a little problem about my er diagram.
Here is the code

-- MySQL Workbench Forward Engineering

SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0;
SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0;
SET @OLD_SQL_MODE=@@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`.`Doctor`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`Doctor` (
`DoctorID` INT NOT NULL AUTO_INCREMENT,
`PatientID` INT NOT NULL,
`First Name` VARCHAR(45) NOT NULL,
`Last Name` VARCHAR(45) NULL,
`Department Name` VARCHAR(150) NOT NULL,
`Specialization` VARCHAR(150) NOT NULL,
`Years of Experience` INT NOT NULL,
`Degree` VARCHAR(150) NOT NULL,
PRIMARY KEY (`DoctorID`))
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`Patient`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`Patient` (
`PatientID` INT NOT NULL AUTO_INCREMENT,
`First Name` VARCHAR(45) NOT NULL,
`Last Name` VARCHAR(45) NULL,
`Birthday` DATE NOT NULL,
`Gender` VARCHAR(6) NOT NULL,
`Age` INT NOT NULL,
`Height` INT NOT NULL,
`Weight` INT NOT NULL,
`Address` VARCHAR(150) NOT NULL,
`Contact Number` VARCHAR(45) NULL,
PRIMARY KEY (`PatientID`))
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`Lab`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`Lab` (
`TestID` INT NOT NULL AUTO_INCREMENT,
`PatientID` INT NOT NULL,
`DoctorID` INT NOT NULL,
`Date` DATE NOT NULL,
PRIMARY KEY (`TestID`),
CONSTRAINT `TestID`
FOREIGN KEY (`TestID`)
REFERENCES `mydb`.`Test_and_Diagnosis` (`Lab_TestID`)
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`Test_and_Diagnosis`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`Test_and_Diagnosis` (
`Patient_PatientID` INT NOT NULL,
`Lab_TestID` INT NOT NULL,
`Body Temperature` DOUBLE NOT NULL,
`Blood Pressure` VARCHAR(45) NOT NULL,
`Blood Type` VARCHAR(5) NOT NULL,
`X-ray Result` VARCHAR(45) NULL,
`Urine Examination` VARCHAR(45) NULL,
`Other tests` VARCHAR(150) NULL,
`Diagnosis` VARCHAR(150) NOT NULL,
PRIMARY KEY (`Patient_PatientID`, `Lab_TestID`),
CONSTRAINT `fk_Patient_has_Lab_Patient1`
FOREIGN KEY (`Patient_PatientID`)
REFERENCES `mydb`.`Patient` (`PatientID`)
ON DELETE NO ACTION
ON UPDATE NO ACTION,
CONSTRAINT `fk_Patient_has_Lab_Lab1`
FOREIGN KEY (`Lab_TestID`)
REFERENCES `mydb`.`Lab` (`TestID`)
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`Inpatient`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`Inpatient` (
`PatientID` INT NOT NULL AUTO_INCREMENT,
`RoomID` INT NOT NULL,
`TestID` INT NOT NULL,
`Date of admitted` DATE NOT NULL,
`Date of discharge` DATE NOT NULL,
PRIMARY KEY (`PatientID`),
CONSTRAINT `PatientID`
FOREIGN KEY (`PatientID`)
REFERENCES `mydb`.`Test_and_Diagnosis` (`Patient_PatientID`)
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`Room`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`Room` (
`RoomID` INT NOT NULL AUTO_INCREMENT,
`PatientID` INT NOT NULL,
`Floor Number` INT NOT NULL,
`Room Number` INT NOT NULL,
`Room Type` VARCHAR(45) NOT NULL,
`Date Admitted` DATE NOT NULL,
`Date Released` DATE NOT NULL,
PRIMARY KEY (`RoomID`, `PatientID`),
INDEX `PatientID_idx` (`PatientID` ASC),
CONSTRAINT `PatientID`
FOREIGN KEY (`PatientID`)
REFERENCES `mydb`.`Inpatient` (`PatientID`)
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`Diagnosis`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`Diagnosis` (
`Doctor_DoctorID` INT NOT NULL,
`Patient_PatientID` INT NOT NULL,
`Diagnosis` VARCHAR(150) NOT NULL,
PRIMARY KEY (`Doctor_DoctorID`, `Patient_PatientID`),
CONSTRAINT `fk_Doctor_has_Patient_Doctor`
FOREIGN KEY (`Doctor_DoctorID`)
REFERENCES `mydb`.`Doctor` (`DoctorID`)
ON DELETE NO ACTION
ON UPDATE NO ACTION,
CONSTRAINT `fk_Doctor_has_Patient_Patient1`
FOREIGN KEY (`Patient_PatientID`)
REFERENCES `mydb`.`Patient` (`PatientID`)
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`Medication`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`Medication` (
`MedicationID` INT NOT NULL AUTO_INCREMENT,
`PatientID` INT NOT NULL,
`Medication1 Name` VARCHAR(150) NULL,
`Medication1 Description` VARCHAR(150) NULL,
`Medication1 Dosage` VARCHAR(150) NULL,
`Medication2 Name` VARCHAR(150) NULL,
`Medication2 Description` VARCHAR(150) NULL,
`Medication2 Dosage` VARCHAR(150) NULL,
`Etc` VARCHAR(150) NULL,
PRIMARY KEY (`MedicationID`, `PatientID`),
INDEX `PatientID_idx` (`PatientID` ASC),
CONSTRAINT `PatientID`
FOREIGN KEY (`PatientID`)
REFERENCES `mydb`.`Patient` (`PatientID`)
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`Outpatient`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`Outpatient` (
`PatientID` INT NOT NULL AUTO_INCREMENT,
`TestID` INT NOT NULL,
PRIMARY KEY (`PatientID`),
CONSTRAINT `PatientID`
FOREIGN KEY (`PatientID`)
REFERENCES `mydb`.`Test_and_Diagnosis` (`Patient_PatientID`)
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`Department`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`Department` (
`DepartmentID` INT NOT NULL AUTO_INCREMENT,
`DoctorID` INT NOT NULL,
`Department Name` VARCHAR(150) NOT NULL,
PRIMARY KEY (`DepartmentID`, `DoctorID`),
INDEX `DoctorID_idx` (`DoctorID` ASC),
CONSTRAINT `DoctorID`
FOREIGN KEY (`DoctorID`)
REFERENCES `mydb`.`Doctor` (`DoctorID`)
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`Bill`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`Bill` (
`Room_RoomID` INT NULL,
`Inpatient_PatientID` INT NOT NULL,
`Outpatient_PatientID` INT NOT NULL,
`Bill No` INT NOT NULL AUTO_INCREMENT,
`Medicine Charge` DOUBLE NULL,
`Room Charge` DOUBLE NULL,
`Number of Days` DOUBLE NULL,
`Health Card` DOUBLE NULL,
`Lab Charge` DOUBLE NOT NULL,
`Doctor Charge` DOUBLE NOT NULL,
`Bill` DOUBLE NOT NULL,
PRIMARY KEY (`Bill No`, `Inpatient_PatientID`, `Outpatient_PatientID`),
INDEX `PatientID_idx` (`Outpatient_PatientID` ASC),
UNIQUE INDEX `Inpatient_PatientID_UNIQUE` (`Inpatient_PatientID` ASC),
UNIQUE INDEX `Outpatient_PatientID_UNIQUE` (`Outpatient_PatientID` ASC),
UNIQUE INDEX `Room_RoomID_UNIQUE` (`Room_RoomID` ASC),
UNIQUE INDEX `Medicine Charge_UNIQUE` (`Medicine Charge` ASC),
UNIQUE INDEX `Room Charge_UNIQUE` (`Room Charge` ASC),
UNIQUE INDEX `Number of Days_UNIQUE` (`Number of Days` ASC),
UNIQUE INDEX `Health Card_UNIQUE` (`Health Card` ASC),
CONSTRAINT `PatientID`
FOREIGN KEY (`Inpatient_PatientID`)
REFERENCES `mydb`.`Inpatient` (`PatientID`)
ON DELETE NO ACTION
ON UPDATE NO ACTION,
CONSTRAINT `PatientID`
FOREIGN KEY (`Outpatient_PatientID`)
REFERENCES `mydb`.`Outpatient` (`PatientID`)
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB;


SET SQL_MODE=@OLD_SQL_MODE;
SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS;
SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS;

I forwarded it from er diagram.But when I copied the same code in a new query tab and I reverse it back to er diagram,It showed a different er diagram.Not all table are linked.Can someone explain why it is not same?Is it how it works or I made a mistake?
Please help me out.
Thanks

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