text: ﻿create table books
  (
  	BookId      char(36),
  	Name        varchar(50),
  	AuthorId    int,
  	Description varchar(200),
  	ISBN        varchar(50),
  	primary key(BookId)
  );
  
  create table authors
  (
  	AuthorId    char(36),
  	Name	    varchar(50),
  	DateOfBirth date,
  	primary key(AuthorId)
  );
  
  create table users
  (
  	UserId	    char(36),
  	UserName    varchar(20),
  	Name        varchar(100),
  	Password    varchar(40),
  	DateOfBirth date,
  	Email       varchar(100),
  	Email1      varchar(100),
          primary key(UserId)
  );
  