https://github.com/busrarafa/laptop_bazar-a-sales-management-system

Laptop Bazar is a sale management system structured with distributed database
https://github.com/busrarafa/laptop_bazar-a-sales-management-system

distributed-database mysql-database sql-server

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Laptop Bazar is a sale management system structured with distributed database

• Host: GitHub
• URL: https://github.com/busrarafa/laptop_bazar-a-sales-management-system
• Owner: BusraRafa
• Created: 2024-08-30T16:06:18.000Z (5 months ago)
• Default Branch: main
• Last Pushed: 2024-11-13T10:40:26.000Z (3 months ago)
• Last Synced: 2024-11-13T11:33:03.881Z (3 months ago)
• Topics: distributed-database, mysql-database, sql-server
• Homepage:
• Size: 35.2 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        

# Laptop_Bazar – Sales Management System

## Overview

**Laptop_Bazar** is a sales management system developed in **PL/SQL** with an **Oracle Database** backend, leveraging **Distributed Database Links** for seamless data exchange. The system tracks laptop sales, identifies top-selling models, and highlights high-spending customers. It also offers recommendations based on laptop specifications.

## Key Features

- **Top-selling Laptops**: Identifies and lists the most popular laptops based on sales data.

- **Top Customers**: Retrieves and ranks customers by their total purchase amounts.

- **Laptop Recommendation**: Suggests laptops based on specifications like memory, storage, battery, and price using nearest neighbor logic.

## Technologies Used

- **PL/SQL**

- **Oracle Database**

- **Distributed Database Links**

- **Triggers and Procedures**

- **Views and Cursors**

## Global Schema

The global schema defines how the data is distributed and how tables are related across different sites. It includes the following key tables:

1. **Laptop (pid, brand, graphics, price, SID, BranchID)**

2. **Specification1 (pid, memory, storage, cpu_speed, battery, display)**

3. **Specification2 (pid, memory, storage, cpu_speed, battery, display)**

4. **Order_D (CID, pid, price)**

5. **Branch (BranchID, branch_name, location)**

6. **Customer (CID, name, contact_info)**

7. **Top_Selling (brand, popularity)**

8. **Seller_Sold (pid, seller_id, sold_count)**

## Fragmentation Schema

### Site 1

- **Laptop (pid, brand, graphics, price, SID, BranchID)**

- **Specification1 (pid, memory, storage, cpu_speed, battery, display)**

- **Top_Customer (CID, total_purchase)**

- **Top_Selling_Brand (brand, popularity)**

- **Seller_Sold (pid, seller_id, sold_count)**

- **View (view_id, brand, graphics, price, SID, BranchID)**

### Site 2

- **Specification2 (pid, memory, storage, cpu_speed, battery, display)**

- **Distance2 (pid, df_memory, df_storage, df_cpu_speed, df_battery, df_display)**

- **Prediction (pid, predicted_price, predicted_specs)**

- **Connection (site_link)**

- **Distance1 (pid, df_memory, df_storage, df_cpu_speed, df_battery, df_display)**

## Allocation Schema

### At Site 1:

- **Laptop**

- **Specification1**

- **Top_Customer**

- **Top_Selling_Brand**

- **Seller_Sold**

- **View**

### At Site 2:

- **Specification2**

- **Distance2**

- **Prediction**

- **Distance1**

- **Connection**

## File Descriptions

- **connection.sql**: Creates a database link to connect to another server for cross-database queries.

- **top_customer.sql**: Fetches and displays the top 5 customers by total purchase amount.

- **top_selling.sql**: Lists the most popular laptop brands based on sales data.

- **view.sql**: Creates views for laptop data and specifications from different sources.

- **distance.sql**: Creates a table to store laptop specification differences for recommendation calculations.

- **pakagesite1.sql**: Defines PL/SQL packages for laptop recommendation, including procedures for filtering by memory, storage, battery, and price.

- **specification1.sql**: Creates and populates the `specification1` table, storing laptop specifications.

## Setup Instructions

1. **Database Setup**: Import all SQL scripts into your Oracle Database.

2. **Establish Database Link**: Execute `connection.sql` to set up a database link for remote queries.

3. **Run SQL Scripts**: Execute the other SQL scripts (`top_customer.sql`, `top_selling.sql`, etc.) to create tables, views, and procedures.

## Usage

- Use the **top_customer.sql** to view the top 5 customers by total purchase.

- Use the **top_selling.sql** to list popular laptop brands.

- Use the **pakagesite1.sql** procedures to get laptop recommendations based on various specifications.