The document outlines the backend design for an e-commerce platform, detailing the architecture, component diagrams, and use-case scenarios. It includes information on data design for various databases such as product, seller, buyer, inventory, cart, and order, as well as a to-do list for enhancements and API design. The draft is authored by Vivek Bhandarkar and contains technical specifications and detailed diagrams to support the backend implementation.

1. E-Commerce Platform Backend Design
E-Commerce Platform Backend Design
Version: 1.0
State : Draft
Author : Vivek Bhandarkar
Index
1. Ecommerce Platform
2. Detailed Component Diagram
a. Platform Monitoring
b. Platform Logging
3. Use-Case diagram
4. Sequence Diagram
5. Data Design
6. TODO
a. Data Design enhancement
b. REST API Design
c. Cache Server Data Design
d. Recommendation Engine Design (Order History + Logs + Analytics → Product Recommendation )
e. NFR Details, Component Detail
f. Detailed Design Pattern Information
g. ...

2. E-Commerce Platform Backend Design
1. Ecommerce Platform

3. E-Commerce Platform Backend Design
2. Ecommerce Backend Component Diagram
2.1 ECommerce Platform Backend Monitoring
2.2 ECommerce Platform Backend Log Aggregation

4. E-Commerce Platform Backend Design
3. Use cases
4. Sequence Diagram

5. E-Commerce Platform Backend Design
4.1 Product Search
4.2 Product Details

6. E-Commerce Platform Backend Design
4.3 Add Product to cart

7. E-Commerce Platform Backend Design

8. E-Commerce Platform Backend Design
4.4 Checkout

9. E-Commerce Platform Backend Design
4.5 Payment
4.6 Product Listing Sequence Diagram

10. E-Commerce Platform Backend Design

11. E-Commerce Platform Backend Design
5. Data Design
5.1 Product Catalog MondoDB Document design
ProductInfo{
_id : ...
displayTitle : "...",
manufacturer: "...",
mrp: "...",
description : "..."
rating: 4.3,
reviews : [
{
title: "Good quality product"
review: "detailed review of product"
rating : "5"
},
{
......
}
],
importantInformation: "...",
details: [
technicalDetails: {
cpu: "4 core",
ram: "4GB"
},
otherDetails :{
height: "20cm",
width: "20cm"
},
warrentyInformation: {
noOfYears: "2",
warrentyConditions: "..."
},
]
}

12. E-Commerce Platform Backend Design
5.2 Seller Database Design
Table : seller_master
Sr, No. Column name Constraint Datatype Comment
1 id Primary Key int
2 seller_name varchar Seller Name
3 registered_busineess_name varchar Registered Business
Name
4. PAN varchar Permanent Account
No.
5 GST varchar
6 registred_business_address varchar
7 phone_no varchar
8 email_id varchar
Table : bank_accounts
Sr, No. Column name Constraint Datatype Comment
1 id Unique Key int
2 seller_id Foreign_key -->seller_master.id varchar Seller Name
3 bank_name varchar
4. ifsc_code varchar .
5 account_type varchar
6 account_number varchar

13. E-Commerce Platform Backend Design
5.3 Buyer Database
Table : buyer_master
Sr, No. Column name Constraint Datatype Comment
2 buyer_id Unique Key varchar Seller Name
3 user_id Unique Key varchar
4. first_name varchar .
5 last_name varchar
6 email_id varchar
Table: buyer_addresses
Sr, No. Column name Constraint Datatype Comment
1 id Unique Key int
2 buyer_id buyer_id
-->buyer_master.buyer_id
varchar Seller Name
3 street_address varchar
4. pin_code varchar .
5 state varchar
6 country varchar
7 phone_no varchar
Table : card_payments
Sr, No. Column name Constraint Datatype Comment
1 id Unique Key int
2 buyer_id varchar Seller Name
3 cvv varchar Encrypted
4. card_no varchar .
5 verification_status varchar

14. E-Commerce Platform Backend Design
6 valid_upto
7 account_number varchar
8 card_name
5.4 Inventory Database
Sr, No. Column name Constraint Datatype Comment
1 id Unique Key int
2 seller_id varchar
3 product_id varchar
5 unit_price varchar
6 quantity varchar
5.5 Cart Database
Table: cart_master
Sr, No. Column name Constraint Datatype
1 id Primary Key int
2 cart_id Unique Key
3 buyer varchar
4 address_id varchar
5 payment_gateway_id varchar
6 total_price double
Table : cart_details
Sr, No. Column name Constraint Datatype
1 id Primary Key int
2 cart_id cart_id->cart_master.cart_id

15. E-Commerce Platform Backend Design
3 product_id varchar
4. seller_id varchar
5 quantity varchar
6 unit_price double
5.6 Order Database
Table : order_master
Sr, No. Column name Constraint Datatype
1 id Primary Key int
2 order_id Unique Key varchar
3 cart_id varchar
4 buyer varchar
5 seller
6 address_id varchar
7 payment_gateway_id varchar
8 total_price double
9 payment_status varchar
9 delivery_status varchar
Table : order_details
Sr, No. Column name Constraint Datatype
1 id Primary Key int
2 cart_id varchar
3 order_id order_id-> order_master.order_id varchar
4. product_id varchar
5 seller_id varchar
6 quantity varchar

16. E-Commerce Platform Backend Design
7 unit_price varchar
5.7 Price Database
Table: price
Sr, No. Column name Constraint Datatype Comment
1 id Unique Key int
2 seller_id varchar
3 product_id varchar
5 unit_price varchar
6 valid_to date
7 valid_from date
6. TODO
1. Data Design enhancement
2. REST API Design
3. Cache Server Data Design
4. Recommendation Engine Design (Order History + Logs + Analytics → Product Recommendation )
5. NFR Details, Component Details
6. Detailed Design Pattern Information
7. ...