Modifications

Id   |  Date        |  Remark
-----|--------------|---------------------------------------------------------------------------------------------------------------------------------------------------
001  |  21/03/2023  |  Created the Initial Project
002  |  21/03/2023  |  Add the project to the Git Repositories

003  |  22/03/2023  |  Creates DBConnector to sets up a connection to a MySQL database
004  |  22/03/2023  |  Creates DBHelper to retrieves customer information from the database using DBConnector

005  |  23/03/2023  |  Defines a Customer object with fields for ID, first name, last name, and date of birth
006  |  23/03/2023  |  Creates a RESTful web service endpoint to retrieve customer information in JSON format using CustomerResource class

006  |  27/03/2023  |  Modified the DBHelper and Customer Classes to retrieve all the data in the database and display it in JSON format
007  |  27/03/2023  |  Creates "insertUser" method in DBHelper class to create new user from backend

008  |  28/03/2023  |  Created 'createCustomer' method in the resource file to insert data to the database from frontend

009  |  30/03/2023  |  Modify the Customer Object, DBHelper class and 'createCustomer' method in the 'CustomerResource' class to insert Customer data to the database from the frontend.
010  |  30/03/2023  |  Create the 'validateUser' method in the DBHelper to validate user credentials from the database

011  |  31/03/2023  |  Create new Resource as 'UserLoginResource' and create 'login' method to validate user credentials from database via DBHelper.
012  |  31/03/2023  |  Create new Object as 'Admin', new method as 'validateAdmin' in DBHelper and a resource as 'AdminLoginResource' to validate admin credentials from database via DBHelper
012  |  31/03/2023  |  All the classes are tested successfully

013  |  01/04/2023  |  Create new object as "Category"
014  |  01/04/2023  |  Add new methods as "addCategory" , "getCategory" and "deleteCategory" in DBHelper
015  |  01/04/2023  |  Create a new Resource as "CategoryResource" and implement @GET, @POST, @DELETE methods
016  |  01/04/2023  |  Al classes are tested successfully

017  |  02/04/2023  |  Add new method as "updateCategory" in DBHelper
018  |  02/04/2023  |  Implement @PUT method in CategoryResource
019  |  02/04/2023  |  Create new object as "Brand"
020  |  01/04/2023  |  Add new methods as "getBrand", "addBrand", "getCategory", "deleteBrand" and "updateBrand" in DBHelper
021  |  02/04/2023  |  Implement @GET, @POST, @DELETE and @PUT methods in BrandResource
022  |  02/04/2023  |  Al classes are tested successfully

023  |  03/04/2023  |  Create new "product" class object
024  |  03/04/2023  |  Add new methods as "getProduct", "addProduct", "deleteProduct" and "updateProduct" in DBHelper
025  |  03/04/2023  |  Implement @GET, @POST, @DELETE and @PUT methods in ProductResource
026  |  03/04/2023  |  Al classes are tested successfully

027  |  04/04/2023  |  Add new methods as "getPurchase" and "addPurchase" in DBHelper
028  |  04/04/2023  |  Create new Resource as "PurchaseResource" and implement @GET and @POST methods

029  |  05/04/2023  |  Create new method as "getPurchasebyUsername" in DBHelper
030  |  05/04/2023  |  Create new Resource as "RelevantPurchaseResource" and implement @GET method