db updates

Dummy_Database.md

@@ -1,23 +1,23 @@
 ### Copy and Paste the following MYSQL commands to make a dummy database for this Project :
 
 
-create database onlinebookstore;
+create database if not exists onlinebookstore;
 
 use onlinebookstore;
 
-create table books(barcode varchar(100) primary key, name varchar(100), author varchar(100), price int, quantity int);
+create table if not exists books(barcode varchar(100) primary key, name varchar(100), author varchar(100), price int, quantity int);
 
-create table users(username varchar(100) primary key,password varchar(100), firstname varchar(100),lastname varchar(100),address text, phone varchar(100),mailid varchar(100),usertype int);
+create table if not exists users(username varchar(100) primary key,password varchar(100), firstname varchar(100),lastname varchar(100),address text, phone varchar(100),mailid varchar(100),usertype int);
 
-insert into books values('10101','Programming in C','James k Wick',500,5);
+insert into if not exists books values('10101','Programming in C','James k Wick',500,5);
 
-insert into books values('10102','Learn Java','Scott Mayers',150,13);
+insert into if not exists books values('10102','Learn Java','Scott Mayers',150,13);
 
-insert into books values('10103','Database Knowledge','Charles Pettzoid',124,360);
+insert into if not exists books values('10103','Database Knowledge','Charles Pettzoid',124,360);
 
-insert into books values('10104','Let us c++','Steve Macclen',90,111);
+insert into if not exists books values('10104','Let us c++','Steve Macclen',90,111);
 
-insert into books values('10105','Success Key','Shashi Raj',5000,15);
+insert into if not exists books values('10105','Success Key','Shashi Raj',5000,15);
 
 insert into users values('User','Password','First','User','My Home','42502216225','[email protected]',2);
 

setup/CreateDatastore.sql

@@ -1,8 +1,8 @@
-CREATE DATABASE onlinebookstore;
+CREATE DATABASE if not exists onlinebookstore;
 
 \c onlinebookstore
 
-CREATE TABLE books 
+CREATE TABLE if not exists books 
   ( 
      barcode   VARCHAR(100) PRIMARY KEY, 
      name      TEXT NOT NULL, 
@@ -11,7 +11,7 @@ CREATE TABLE books
      quantity  REAL
   ); 
 
-  CREATE TABLE users
+  CREATE TABLE if not exists users
   ( 
      username  VARCHAR(100) PRIMARY KEY, 
      password  VARCHAR(100) NOT NULL,