I use MySQL Server 5.5; MySQL Workbench 5.2 CE; WinXp SP3;
I created 2 tables:
CREATE TABLE IF NOT EXISTS `mydb`.`Address` (
`AddressID` INT NOT NULL AUTO_INCREMENT ,
`Country` VARCHAR(45) NOT NULL ,
`City` VARCHAR(45) NOT NULL ,
`Region` VARCHAR(45) NOT NULL ,
`PostalCode` VARCHAR(12) NOT NULL ,
`Address1` VARCHAR(100) NOT NULL ,
PRIMARY KEY (`AddressID`) )
ENGINE = InnoDB;
CREATE TABLE IF NOT EXISTS `mydb`.`Customers` (
`CustomerID` INT NOT NULL AUTO_INCREMENT ,
`FirstName` VARCHAR(45) NOT NULL ,
`LastName` VARCHAR(45) NOT NULL ,
`Email` VARCHAR(500) NOT NULL ,
`Password` VARCHAR(500) NOT NULL ,
`RegistrationDate` TIMESTAMP NULL ,
`CustomerCellPhone` VARCHAR(20) NULL ,
`AddressID` INT NULL ,
PRIMARY KEY (`CustomerID`) ,
INDEX `AddressID_idx` (`AddressID` ASC) ,
UNIQUE INDEX `Email_UNIQUE` (`Email` ASC) ,
CONSTRAINT `CustomerAddressID`
FOREIGN KEY (`AddressID` )
REFERENCES `mydb`.`Address` (`AddressID` )
ON DELETE RESTRICT
ON UPDATE CASCADE)
ENGINE = InnoDB;
Basically, the table ‘Customers’ contains foreign key constraint and it doesn't work.
Theoretically, if I insert the data into two tables, I won’t delete ‘Address’ because ‘Customers’ depends on it:
insert into Address SET Country = 'Zimbabwe',
City = 'Harare',
Region = 'Mashonaland East Province',
PostalCode = '777',
Address1 = 'square 777 - 777';
insert into Customers SET FirstName = 'John',
LastName ='Doe',
Email = 'john#doe.com',
Password = '12345',
RegistrationDate = now(),
CustomerCellPhone = 123456789,
AddressID = 1;
'Customers'
CustomerID FirstName AddressID
1 John 1
'Address'
AddressID Country City
1 Zimbabwe Harare
But, I can delete the address of my customer by:
DELETE FROM Address WHERE AddressID=1;
the table 'Customers' refer to nothing (dangling pointer)
CustomerID FirstName AddressID
1 John 1
the empty table 'Address'
AddressID Country City
--- --- ---
The problem is ‘Customers’ refer to NULL into ‘Address’, because ‘Address’.AddressID = 1 doesn’t exist. It doesn't give me any errors. What I can do to repair this bug?
Phew, restart the MySQL Server helps me.
Related
I tried to create 2 foreign keys in customerdetails table but it keeps me showing an error when I execute this query. Is there any problem with my query?
CREATE TABLE `vg_shippingdb`.`customerdetails` (
`CustomerID` INT NOT NULL AUTO_INCREMENT ,
`Name` VARCHAR(25) NOT NULL ,
`Age` INT NOT NULL ,
`Sex` VARCHAR(10) NOT NULL ,
`Email` VARCHAR(45) NOT NULL ,
PRIMARY KEY (`CustomerID`),
FOREIGN KEY (ReservedID) REFERENCES reservationdetails(ReservedID),
FOREIGN KEY (TicketID) REFERENCES ticket(TicketID)) ENGINE = InnoDB;
CREATE TABLE `vg_shippingdb`.`reservationdetails` (
`ReservedID` INT NOT NULL AUTO_INCREMENT ,
`ReservedDate` DATE NOT NULL ,
`DepartureTime` VARCHAR(25) NOT NULL ,
`Destination` VARCHAR(45) NOT NULL ,
`Accommodation` TEXT NULL ,
`NameOfVessel` VARCHAR(45) NOT NULL ,
PRIMARY KEY (`ReservedID`)) ENGINE = InnoDB;
CREATE TABLE `vg_shippingdb`.`ticket` (
`TicketID` INT NOT NULL AUTO_INCREMENT ,
`TicketNo` VARCHAR(25) NOT NULL ,
`Status` VARCHAR(25) NOT NULL ,
PRIMARY KEY (`TicketID`)) ENGINE = InnoDB;
The columns does not exist in a table really. Specifying the foreign key does not create a column, you must do it explicitly before the FK definition.
CREATE TABLE `vg_shippingdb`.`customerdetails` (
`CustomerID` INT NOT NULL AUTO_INCREMENT ,
`Name` VARCHAR(25) NOT NULL ,
`Age` INT NOT NULL ,
`Sex` VARCHAR(10) NOT NULL ,
`Email` VARCHAR(45) NOT NULL ,
PRIMARY KEY (`CustomerID`),
-- Create columns
ReservedID INT,
TicketID INT,
-- Then use them in FK expressions
FOREIGN KEY (ReservedID) REFERENCES reservationdetails(ReservedID),
FOREIGN KEY (TicketID) REFERENCES ticket(TicketID)) ENGINE = InnoDB;
PS. The table which FK is refferred on must be created firstly - FK cannot refer the table which will be created later.
before creating foreign keys, create all tables
First create reservationdetails and ticket then create customerdetails.
Note: First create source/referred table then create table with FOREIGN KEY
im newbee at SQL,i had a error when i create a foreign key (orderdetails) that references (products) table
drop database My_Classicmodels ;
create database My_Classicmodels ;
use My_Classicmodels;
// creat table orders
create table orders (
orderNumber INT(11) auto_increment primary key ,
orderDate datetime not null ,
requiredDate datetime not null ,
shippedDate datetime ,
statuss varchar(15) not null ,
comments text ,
customerNumber int(11) not null
) Engine = InnoDb ;
// creat table productlines
create table productlines (
productLine Varchar(50) primary key ,
textDescription varchar(4000) ,
htmlDescription mediumtext ,
image mediumblob
) ENgine =InnoDB ;
// creat tabale orderdetails
create table orderdetails (
orderNumber Int(11) not null ,
productCode varchar(15) not null ,
quantityOrdered Int(11) not null ,
priceEach Double not null ,
orderLineNumber smallint(6) not null ,
constraint fk_order_number foreign key (orderNumber) references
orders ( orderNumber) on delete restrict on update cascade ,
constraint fk_productCode foreign key ( productCode) references
products (productCode) ,
constraint fk_key primary key( orderNumber, productCode )
) Engine = InnoDb ;
create table products (
productCode varchar(15) primary key ,
productName varchar(70) not null ,
productLine Varchar(50) not null,
productScale varchar(10) not null,
productVendor varchar(50) not null,
productDescription text not null ,
quantityInStock smallint not null ,
buyPrice double not null ,
constraint fk_productLine foreign key (productLine) references
productlines ( productLine) on delete restrict on update cascade
) engine = InnoDB ;
describe orderdetails ;
Due your table's creation order in you code you are referring to a table products that is not yet created
try change creation order this way
You are referring to a t
create table products (
productCode varchar(15) primary key ,
productName varchar(70) not null ,
productLine Varchar(50) not null,
productScale varchar(10) not null,
productVendor varchar(50) not null,
productDescription text not null ,
quantityInStock smallint not null ,
buyPrice double not null ,
constraint fk_productLine foreign key (productLine) references
productlines ( productLine) on delete restrict on update cascade
) engine = InnoDB ;
// creat tabale orderdetails
create table orderdetails (
orderNumber Int(11) not null ,
productCode varchar(15) not null ,
quantityOrdered Int(11) not null ,
priceEach Double not null ,
orderLineNumber smallint(6) not null ,
constraint fk_order_number foreign key (orderNumber) references
orders ( orderNumber) on delete restrict on update cascade ,
constraint fk_productCode foreign key ( productCode) references
products (productCode) ,
constraint fk_key primary key( orderNumber, productCode )
The following recordset in Dreamweaver throws a 1052 ambiguous error every time I attempt to test it. I know it has something to do with the dateADDED, but don't know how to fix it.
SELECT commentID, commentTitle, commentContent, topicTable.topicTitle, DAYNAME(dateADDED) as day, MONTHNAME(dateADDED) as month,
DAY(dateADDED) as date, YEAR(dateADDED) as year
FROM commentTable, topicTable
WHERE commentID = colname AND topicTable.topidID = commentTable.topicID
Here is the layout of the tables,
CREATE TABLE userTable
(
userID VARCHAR(15) NOT NULL,
screenName VARCHAR(15) NOT NULL UNIQUE,
userPasswd CHAR(40) NOT NULL,
firstName VARCHAR(15) NOT NULL,
lastName VARCHAR(25) NOT NULL,
dateJoined TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
lastlogin DATETIME,
PRIMARY KEY(userID)
)
;
CREATE TABLE categoryTable
(
categoryID MEDIUMINT AUTO_INCREMENT NOT NULL,
categoryName VARCHAR(30) NOT NULL,
categoryDescription VARCHAR(200) NOT NULL,
PRIMARY KEY (categoryID)
)
;
CREATE TABLE topicTable
(
topicID MEDIUMINT AUTO_INCREMENT NOT NULL,
topicTitle VARCHAR(30) NOT NULL,
userID VARCHAR(15) NOT NULL,
dateAdded TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
categoryID MEDIUMINT NOT NULL,
PRIMARY KEY (topicID)
)
;
CREATE TABLE commentTable
(
commentID MEDIUMINT AUTO_INCREMENT NOT NULL,
commentTitle VARCHAR(30) NOT NULL,
commentContent TEXT NOT NULL,
userID VARCHAR(15) NOT NULL,
dateAdded TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
topicID INT NOT NULL,
PRIMARY KEY (commentID)
)
;
dateADDED is represented in both tables, so you should choose from which one you want it to be in the result set :
SELECT ct.commentID
, ct.commentTitle
, ct.commentContent
, tt.topicTitle
, DAYNAME(ct.dateADDED) as `day`
, MONTHNAME(ct.dateADDED) as `month`
, DAY(ct.dateADDED) as `date`
, YEAR(ct.dateADDED) as `year`
FROM commentTable ct
JOIN topicTable tt ON ct.commentID = tt.colname AND tt.topidID = ct.topicID
By the way, still wonder, what colname stands for, maybe it should be ct.userID = tt.userID instead?
I have designed schema with MySQL workbench.
But it couldn't complete Database Synchronize.It can create tables with out foreign keys.
I copied SQL from MySQL WorkBench to execute in phpmysqadmin.
CREATE TABLE IF NOT EXISTS `Books`.`Users` (
`id` INT UNSIGNED NOT NULL AUTO_INCREMENT ,
`mail` VARCHAR(45) NOT NULL ,
`password` VARCHAR(45) NOT NULL ,
`smspassword` VARCHAR(8) NULL ,
`mobile` VARCHAR(16) NULL ,
`type` ENUM('admin','secretery','groupadmin','user') NOT NULL DEFAULT 'user' ,
`securelogin` ENUM('true','false') NULL DEFAULT 'true' ,
PRIMARY KEY (`id`) ,
UNIQUE INDEX `id_UNIQUE` (`id` ASC) ,
UNIQUE INDEX `mail_UNIQUE` (`mail` ASC) )
ENGINE = InnoDB
DEFAULT CHARACTER SET = utf8
COLLATE = utf8_unicode_ci
COMMENT = 'Table to store users data'
Users table created successfully. But following table (Profile) can't be created.
CREATE TABLE IF NOT EXISTS `Books`.`Profiles` (
`id` INT NOT NULL AUTO_INCREMENT ,
`firstname` VARCHAR(45) NOT NULL ,
`lastname` VARCHAR(45) NOT NULL ,
`title` VARCHAR(45) NOT NULL ,
`nationalcode` VARCHAR(45) NOT NULL ,
`User_id` INT NOT NULL ,
PRIMARY KEY (`id`, `User_id`) ,
INDEX `fk_Profiles_Users` (`User_id` ASC) ,
CONSTRAINT `fk_Profiles_Users`
FOREIGN KEY (`User_id` )
REFERENCES `Books`.`Users` (`id` )
ON DELETE CASCADE
ON UPDATE CASCADE)
ENGINE = InnoDB
DEFAULT CHARACTER SET = utf8
COLLATE = utf8_unicode_ci
But it will be return:
#1005 - Can't create table 'Books.Profiles' (errno: 150)
Where is the problem, and how should I solve this?
You need to match the primary id column type with the foreign key column type - your primary id in Users is UNSIGNED INT, but your foreign key in Profiles is INT. Try this:
CREATE TABLE IF NOT EXISTS `Books`.`Profiles` (
`id` INT NOT NULL AUTO_INCREMENT ,
`firstname` VARCHAR(45) NOT NULL ,
`lastname` VARCHAR(45) NOT NULL ,
`title` VARCHAR(45) NOT NULL ,
`nationalcode` VARCHAR(45) NOT NULL ,
`User_id` INT UNSIGNED NOT NULL , -- <<= Check the type here!
PRIMARY KEY (`id`, `User_id`) ,
INDEX `fk_Profiles_Users` (`User_id` ASC) ,
CONSTRAINT `fk_Profiles_Users`
FOREIGN KEY (`User_id` )
REFERENCES `Books`.`Users` (`id` )
ON DELETE CASCADE
ON UPDATE CASCADE)
ENGINE = InnoDB
DEFAULT CHARACTER SET = utf8
COLLATE = utf8_unicode_ci;
I'm using MySQL to design a database, I'm exporting the code for generating the database by using the 'SQL Create Script' option on the workbench. However, when I run the code, and use SHOW TABLES I get null, which probably means no table was created in the database. This is the code that was generated (its long but since it was auto generated the error is probably from a setting I had when exporting it.)
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';
CREATE SCHEMA IF NOT EXISTS `travel_agency` DEFAULT CHARACTER SET latin1 COLLATE latin1_swedish_ci ;
USE `travel_agency` ;
-- -----------------------------------------------------
-- Table `travel_agency`.`Region`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `travel_agency`.`Region` (
`region_name` VARCHAR(45) NOT NULL ,
`languages` VARCHAR(100) NOT NULL ,
PRIMARY KEY (`region_name`) )
ENGINE = InnoDB;
-- -----------------------------------------------------
-- Table `travel_agency`.`Country`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `travel_agency`.`Country` (
`country_name` VARCHAR(15) NOT NULL ,
`Region_region_name` VARCHAR(45) NOT NULL ,
`currency` CHAR(20) NOT NULL ,
PRIMARY KEY (`country_name`, `Region_region_name`) ,
INDEX `fk_Country_Region1` (`Region_region_name` ASC) ,
CONSTRAINT `fk_Country_Region1`
FOREIGN KEY (`Region_region_name` )
REFERENCES `travel_agency`.`Region` (`region_name` )
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB;
-- -----------------------------------------------------
-- Table `travel_agency`.`Transport`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `travel_agency`.`Transport` (
`Country_country_name` VARCHAR(15) NOT NULL ,
`cost_estimate` DECIMAL(8,2) NOT NULL ,
`transport_deals` BLOB NOT NULL ,
`transport_rating` CHAR(1) NOT NULL ,
PRIMARY KEY (`Country_country_name`) ,
CONSTRAINT `fk_Transport_Country`
FOREIGN KEY (`Country_country_name` )
REFERENCES `travel_agency`.`Country` (`country_name` )
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB;
-- -----------------------------------------------------
-- Table `travel_agency`.`Resort`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `travel_agency`.`Resort` (
`resort_name` VARCHAR(50) NOT NULL ,
`city` VARCHAR(50) NOT NULL ,
`Country_country_name` VARCHAR(15) NOT NULL ,
`resort_type` CHAR(20) NOT NULL ,
INDEX `fk_Resort_Country1` (`Country_country_name` ASC) ,
PRIMARY KEY (`resort_name`, `city`) ,
CONSTRAINT `fk_Resort_Country1`
FOREIGN KEY (`Country_country_name` )
REFERENCES `travel_agency`.`Country` (`country_name` )
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB;
-- -----------------------------------------------------
-- Table `travel_agency`.`Hotel`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `travel_agency`.`Hotel` (
`hotel_name` CHAR NOT NULL ,
`rating` CHAR(1) NOT NULL ,
`address1` CHAR(50) NOT NULL ,
`address2` CHAR(50) NOT NULL ,
`postcode` CHAR(10) NOT NULL ,
`telephone` CHAR(20) NOT NULL ,
`Resort_resort_name` VARCHAR(50) NOT NULL ,
PRIMARY KEY (`hotel_name`) ,
INDEX `fk_Hotel_Resort1` (`Resort_resort_name` ASC) ,
CONSTRAINT `fk_Hotel_Resort1`
FOREIGN KEY (`Resort_resort_name` )
REFERENCES `travel_agency`.`Resort` (`resort_name` )
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB;
-- -----------------------------------------------------
-- Table `travel_agency`.`Room`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `travel_agency`.`Room` (
`room_num` INT NOT NULL ,
`room_type` CHAR(10) NOT NULL ,
`Hotel_hotel_name` CHAR NOT NULL ,
`minibar` BIT NOT NULL ,
`tv` BIT NOT NULL ,
`smoking_permitted` BIT NOT NULL ,
INDEX `fk_Room_Hotel1` (`Hotel_hotel_name` ASC) ,
PRIMARY KEY (`room_num`, `room_type`) ,
CONSTRAINT `fk_Room_Hotel1`
FOREIGN KEY (`Hotel_hotel_name` )
REFERENCES `travel_agency`.`Hotel` (`hotel_name` )
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB;
-- -----------------------------------------------------
-- Table `travel_agency`.`Guest`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `travel_agency`.`Guest` (
`guest_id` INT NOT NULL ,
`firstname` VARCHAR(20) NOT NULL ,
`surname` VARCHAR(20) NOT NULL ,
`mobilephone` CHAR(20) NOT NULL ,
PRIMARY KEY (`guest_id`) )
ENGINE = InnoDB;
-- -----------------------------------------------------
-- Table `travel_agency`.`Bookings`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `travel_agency`.`Bookings` (
`Guest_guest_id` INT NOT NULL ,
`Hotel_hotel_name` CHAR NOT NULL ,
`guest_count` INT NOT NULL ,
PRIMARY KEY (`Guest_guest_id`, `Hotel_hotel_name`) ,
INDEX `fk_Booking_Guest1` (`Guest_guest_id` ASC) ,
INDEX `fk_Booking_Hotel1` (`Hotel_hotel_name` ASC) ,
CONSTRAINT `fk_Booking_Guest1`
FOREIGN KEY (`Guest_guest_id` )
REFERENCES `travel_agency`.`Guest` (`guest_id` )
ON DELETE NO ACTION
ON UPDATE NO ACTION,
CONSTRAINT `fk_Booking_Hotel1`
FOREIGN KEY (`Hotel_hotel_name` )
REFERENCES `travel_agency`.`Hotel` (`hotel_name` )
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB;
-- -----------------------------------------------------
-- Table `travel_agency`.`HotelFacilities`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `travel_agency`.`HotelFacilities` (
`Hotel_hotel_name` CHAR NOT NULL ,
`internet_access` BIT NOT NULL ,
`hotel_restaurant` BIT NOT NULL ,
`games_room` BIT NOT NULL ,
`bar` BIT NOT NULL ,
`evening_shows` BIT NOT NULL ,
`massage_parlour` BIT NOT NULL ,
`misc_details` BLOB NOT NULL ,
PRIMARY KEY (`Hotel_hotel_name`) ,
CONSTRAINT `fk_HotelFacilities_Hotel1`
FOREIGN KEY (`Hotel_hotel_name` )
REFERENCES `travel_agency`.`Hotel` (`hotel_name` )
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB;
-- -----------------------------------------------------
-- Table `travel_agency`.`Attractions`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `travel_agency`.`Attractions` (
`Region_region_name` VARCHAR(45) NOT NULL ,
`dirt_mountains` BIT NOT NULL ,
`beaches` BIT NOT NULL ,
`casinos` BIT NOT NULL ,
`safari` BIT NOT NULL ,
`snow_mountains` BIT NOT NULL ,
`misc_details` BLOB NOT NULL ,
PRIMARY KEY (`Region_region_name`) ,
CONSTRAINT `fk_Attractions_Region1`
FOREIGN KEY (`Region_region_name` )
REFERENCES `travel_agency`.`Region` (`region_name` )
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB;
-- -----------------------------------------------------
-- Table `travel_agency`.`Rate`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `travel_agency`.`Rate` (
`Hotel_hotel_name` CHAR NOT NULL ,
`Room_room_num` INT NOT NULL ,
`Room_room_type` CHAR(10) NOT NULL ,
`first_quarter` DECIMAL(20,2) NOT NULL ,
`second_quarter` DECIMAL(20,2) NOT NULL ,
`third_quarter` DECIMAL(20,2) NOT NULL ,
`fourth_quarter` DECIMAL(20,2) NOT NULL ,
`discount_information` BLOB NOT NULL ,
PRIMARY KEY (`Hotel_hotel_name`, `Room_room_num`, `Room_room_type`) ,
INDEX `fk_Rate_Room1` (`Room_room_num` ASC, `Room_room_type` ASC) ,
CONSTRAINT `fk_Rate_Hotel1`
FOREIGN KEY (`Hotel_hotel_name` )
REFERENCES `travel_agency`.`Hotel` (`hotel_name` )
ON DELETE NO ACTION
ON UPDATE NO ACTION,
CONSTRAINT `fk_Rate_Room1`
FOREIGN KEY (`Room_room_num` , `Room_room_type` )
REFERENCES `travel_agency`.`Room` (`room_num` , `room_type` )
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'm using sql command line client and putting the code but it doesn't work.
Its because you're using command line client as your database. That just makes your pc function as a database but doesn't exactly have all features a professional database would have. And MySQL workbench is designed to export code for databases more professional.
Since you're using command line client I'm assuming this is either practice or homework of some sort? Either way, this is the way the code would work in Command line client. Try this.
CREATE TABLE Region
(
region_name VARCHAR(45) NOT NULL ,
languages VARCHAR(100) NOT NULL ,
PRIMARY KEY (region_name)
);
CREATE TABLE Country
(
country_name VARCHAR(15) NOT NULL ,
Region_region_name VARCHAR(45) NOT NULL ,
currency CHAR(20) NOT NULL ,
PRIMARY KEY (country_name, Region_region_name) ,
CONSTRAINT fk_Country_Region1
FOREIGN KEY (Region_region_name )
REFERENCES Region (region_name )
);
CREATE TABLE Transport (
Country_country_name VARCHAR(15) NOT NULL ,
cost_estimate DECIMAL(8,2) NOT NULL ,
transport_deals CHAR(100) NULL ,
transport_rating CHAR(20) NOT NULL ,
PRIMARY KEY (Country_country_name) ,
CONSTRAINT fk_Transport_Country
FOREIGN KEY (Country_country_name)
REFERENCES Country (country_name )
);
CREATE TABLE Resort (
resort_name VARCHAR(50) NOT NULL ,
Country_country_name VARCHAR(15) NOT NULL ,
resort_type CHAR(20) NOT NULL ,
PRIMARY KEY (resort_name) ,
CONSTRAINT fk_Resort_Country1
FOREIGN KEY (Country_country_name)
REFERENCES Country (country_name)
);
CREATE TABLE Hotel (
hotel_name CHAR(20) NOT NULL ,
rating CHAR NOT NULL ,
address1 CHAR(50) NOT NULL ,
address2 CHAR(50) NOT NULL ,
postcode CHAR(10) NOT NULL ,
telephone CHAR(20) NOT NULL ,
Resort_resort_name VARCHAR(50) NOT NULL ,
PRIMARY KEY (hotel_name) ,
CONSTRAINT fk_Hotel_Resort1
FOREIGN KEY (Resort_resort_name)
REFERENCES Resort (resort_name)
);
CREATE TABLE Room (
room_num INT NOT NULL ,
room_type CHAR(10) NOT NULL ,
Hotel_hotel_name CHAR(20) NOT NULL ,
minibar BOOLEAN NOT NULL ,
tv BOOLEAN NOT NULL ,
smoking_permitted BOOLEAN NOT NULL ,
PRIMARY KEY (room_num) ,
CONSTRAINT fk_Room_Hotel1
FOREIGN KEY (Hotel_hotel_name)
REFERENCES Hotel (hotel_name)
);
CREATE TABLE Guest (
guest_id INT NOT NULL ,
firstname VARCHAR(20) NOT NULL ,
surname VARCHAR(20) NOT NULL ,
mobilephone CHAR(20) NOT NULL ,
PRIMARY KEY (guest_id)
);
CREATE TABLE Bookings (
Guest_guest_id INT NOT NULL ,
Hotel_hotel_name CHAR(20) NOT NULL ,
guest_count INT NOT NULL ,
PRIMARY KEY (Guest_guest_id, Hotel_hotel_name) ,
CONSTRAINT fk_Booking_Guest1
FOREIGN KEY (Guest_guest_id)
REFERENCES Guest (guest_id),
CONSTRAINT fk_Booking_Hotel1
FOREIGN KEY (Hotel_hotel_name)
REFERENCES Hotel (hotel_name)
);
CREATE TABLE HotelFacilities (
Hotel_hotel_name CHAR(20) NOT NULL ,
internet_access BOOLEAN NOT NULL ,
hotel_restaurant BOOLEAN NOT NULL ,
games_room BOOLEAN NOT NULL ,
bar BOOLEAN NOT NULL ,
evening_shows BOOLEAN NOT NULL ,
massage_parlour BOOLEAN NOT NULL ,
misc_details CHAR(100) NULL ,
PRIMARY KEY (Hotel_hotel_name) ,
CONSTRAINT fk_HotelFacilities_Hotel1
FOREIGN KEY (Hotel_hotel_name)
REFERENCES Hotel (hotel_name)
);
CREATE TABLE Attractions (
Region_region_name VARCHAR(45) NOT NULL ,
dirt_mountains BOOLEAN NOT NULL ,
beaches BOOLEAN NOT NULL ,
casinos BOOLEAN NOT NULL ,
safari BOOLEAN NOT NULL ,
snow_mountains BOOLEAN NOT NULL ,
misc_details CHAR(100) NULL ,
PRIMARY KEY (Region_region_name) ,
CONSTRAINT fk_Attractions_Region1
FOREIGN KEY (Region_region_name )
REFERENCES Region (region_name )
);
CREATE TABLE Rate (
Hotel_hotel_name CHAR(20) NOT NULL ,
Room_room_num INT NOT NULL ,
first_quarter DECIMAL(10,2) NOT NULL ,
second_quarter DECIMAL(10,2) NOT NULL ,
third_quarter DECIMAL(10,2) NOT NULL ,
fourth_quarter DECIMAL(10,2) NOT NULL ,
discount_information CHAR(100) NULL ,
PRIMARY KEY (Hotel_hotel_name, Room_room_num) ,
CONSTRAINT fk_Rate_Hotel1
FOREIGN KEY (Hotel_hotel_name )
REFERENCES Hotel (hotel_name ),
CONSTRAINT fk_Rate_Room1
FOREIGN KEY (Room_room_num)
REFERENCES Room (room_num)
);