database table not being created

Question

I am designing a sql db for business listings in my local area. I am using mySQL WorkBench to design the DB, how ever I am having some issues with one of the tables in the DB not being able to be created.

This is what the db design looks like

The issue I am having is with BusinessHours, I am finding it abit confusing because I want to relate it with a Foregin key to BusinessDirectory (each businessDirectory has many BusinessHours) 'one to many' so that you can represent the 7 days of the week. Hope that makes sense.

This is the sql generated using mySQL workbench

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';

CREATE SCHEMA IF NOT EXISTS `mydb` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci ;
USE `mydb` ;

-- -----------------------------------------------------
-- Table `mydb`.`Members`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mydb`.`Members` ;

CREATE  TABLE IF NOT EXISTS `mydb`.`Members` (
  `idMembers` INT NOT NULL AUTO_INCREMENT ,
  `firstName` VARCHAR(45) NOT NULL ,
  `lastName` VARCHAR(45) NOT NULL ,
  `email` VARCHAR(45) NOT NULL ,
  `password` VARCHAR(45) NOT NULL ,
  PRIMARY KEY (`idMembers`) )
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`BusinessDirectory`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mydb`.`BusinessDirectory` ;

CREATE  TABLE IF NOT EXISTS `mydb`.`BusinessDirectory` (
  `idBusinessDirectory` INT NOT NULL ,
  `businessName` VARCHAR(45) NOT NULL ,
  `businessDescription` VARCHAR(1000) NULL ,
  `businessLogo` VARCHAR(45) NULL ,
  `idMembers` INT NULL ,
  `directoryCategory` VARCHAR(45) NULL ,
  PRIMARY KEY (`idBusinessDirectory`) ,
  INDEX `idMembers_idx` (`idMembers` ASC) ,
  CONSTRAINT `idMembers`
    FOREIGN KEY (`idMembers` )
    REFERENCES `mydb`.`Members` (`idMembers` )
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`BusinessAddress`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mydb`.`BusinessAddress` ;

CREATE  TABLE IF NOT EXISTS `mydb`.`BusinessAddress` (
  `idBusinessDirectory` INT NOT NULL ,
  `addressNumber` VARCHAR(5) NULL ,
  `addressAreaName` VARCHAR(45) NULL ,
  `addressLat` FLOAT(10,6) NULL ,
  `addressLong` FLOAT(10,6) NULL ,
  PRIMARY KEY (`idBusinessDirectory`) ,
  CONSTRAINT `idBusinessDirectory`
    FOREIGN KEY (`idBusinessDirectory` )
    REFERENCES `mydb`.`BusinessDirectory` (`idBusinessDirectory` )
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`BusinessHours`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mydb`.`BusinessHours` ;

CREATE  TABLE IF NOT EXISTS `mydb`.`BusinessHours` (
  `idBusinessDirectory` INT NOT NULL ,
  `dayOfWeek` INT NULL ,
  `openingTime` TIME NULL ,
  `closingTime` TIME NULL ,
  PRIMARY KEY (`idBusinessDirectory`) ,
  CONSTRAINT `idBusinessDirectory`
    FOREIGN KEY (`idBusinessDirectory` )
    REFERENCES `mydb`.`BusinessDirectory` (`idBusinessDirectory` )
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;

USE `mydb` ;


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

So I was hoping that someone can help me figure out why I am unable to add BusinessHours table to my db.

Here are two screenshots showing the error msgs I am reciving in phpMyAdmin

any help would be appreciated

Final Updated sql;

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';

CREATE SCHEMA IF NOT EXISTS `mydb` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci ;
USE `mydb` ;

-- -----------------------------------------------------
-- Table `mydb`.`Members`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mydb`.`Members` ;

CREATE  TABLE IF NOT EXISTS `mydb`.`Members` (
  `idMembers` INT NOT NULL AUTO_INCREMENT ,
  `firstName` VARCHAR(45) NOT NULL ,
  `lastName` VARCHAR(45) NOT NULL ,
  `email` VARCHAR(45) NOT NULL ,
  `password` VARCHAR(45) NOT NULL ,
  PRIMARY KEY (`idMembers`) )
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`BusinessDirectory`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mydb`.`BusinessDirectory` ;

CREATE  TABLE IF NOT EXISTS `mydb`.`BusinessDirectory` (
  `idBusinessDirectory` INT NOT NULL ,
  `businessName` VARCHAR(45) NOT NULL ,
  `businessDescription` VARCHAR(1000) NULL ,
  `businessLogo` VARCHAR(45) NULL ,
  `idMembers` INT NULL ,
  `directoryCategory` VARCHAR(45) NULL ,
  PRIMARY KEY (`idBusinessDirectory`) ,
  INDEX `idMembers_idx` (`idMembers` ASC) ,
  CONSTRAINT `idMembers`
    FOREIGN KEY (`idMembers` )
    REFERENCES `mydb`.`Members` (`idMembers` )
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`BusinessAddress`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mydb`.`BusinessAddress` ;

CREATE  TABLE IF NOT EXISTS `mydb`.`BusinessAddress` (
  `idBusinessDirectory_BusinessAddress` INT NOT NULL ,
  `addressNumber` VARCHAR(5) NULL ,
  `addressAreaName` VARCHAR(45) NULL ,
  `addressLat` FLOAT(10,6) NULL ,
  `addressLong` FLOAT(10,6) NULL ,
  PRIMARY KEY (`idBusinessDirectory_BusinessAddress`) ,
  CONSTRAINT `idBusinessDirectory_BusinessAddress`
    FOREIGN KEY (`idBusinessDirectory_BusinessAddress` )
    REFERENCES `mydb`.`BusinessDirectory` (`idBusinessDirectory` )
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`BusinessHours`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mydb`.`BusinessHours` ;

CREATE  TABLE IF NOT EXISTS `mydb`.`BusinessHours` (
  `idBusinessDirectory_BusinessHours` INT NOT NULL ,
  `dayOfWeek` INT NULL ,
  `openingTime` TIME NULL ,
  `closingTime` TIME NULL ,
  PRIMARY KEY (`idBusinessDirectory_BusinessHours`) ,
  CONSTRAINT `idBusinessDirectory_BusinessHours`
    FOREIGN KEY (`idBusinessDirectory_BusinessHours` )
    REFERENCES `mydb`.`BusinessDirectory` (`idBusinessDirectory` )
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;

USE `mydb` ;


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

this is what the Foregin key tab should look like

thanks for the help guys

Answer 1

The constraint name idBusinessDirectory for foreign key is repeated in table BusinessHours and BusinessAddress .

Give different name to the constraint.

UPDATED

Follow a proper FK naming convention so that such error never pops up and just by the name of constraint we can know the tables involved in the constraint.

fk_[referencing table name]_[referenced table name]_[referencing field name]

So in your case the constraints will be

EDIT Update your code with this

BusinessAddress Table

CONSTRAINT `fk_BusinessAddress_BusinessDirectory_idBusinessDirectory`
FOREIGN KEY (`idBusinessDirectory` )
REFERENCES `mydb`.`BusinessDirectory` (`idBusinessDirectory` )
ON DELETE NO ACTION
ON UPDATE NO ACTION)


BusinessHours Table

CONSTRAINT `fk_BusinessHours_BusinessDirectory_idBusinessDirectory`
FOREIGN KEY (`idBusinessDirectory` )
REFERENCES `mydb`.`BusinessDirectory` (`idBusinessDirectory` )
ON DELETE NO ACTION
ON UPDATE NO ACTION)

All your constraints are stored in this INFORMATION_SCHEMA.KEY_COLUMN_USAGE in INNODB

REFER

Hope it helps.