Database schema for stock management system

Designing a database schema for a stock management system involves capturing information related to products, inventory, suppliers, transactions, and other relevant entities. Below is a basic example of a database schema for a stock management system.


  1. Product:

    • ProductID (Primary Key)
    • ProductName
    • Description
    • CategoryID (Foreign Key referencing Category table)
    • SupplierID (Foreign Key referencing Supplier table)
    • CostPrice
    • SellingPrice
    • StockQuantity
  2. Category:

    • CategoryID (Primary Key)
    • CategoryName
  3. Supplier:

    • SupplierID (Primary Key)
    • SupplierName
    • ContactPerson
    • PhoneNumber
    • Email
  4. Transaction:

    • TransactionID (Primary Key)
    • ProductID (Foreign Key referencing Product table)
    • TransactionType (e.g., purchase, sale)
    • TransactionDate
    • Quantity
    • UnitPrice
    • TotalAmount
  5. StockAdjustment:

    • AdjustmentID (Primary Key)
    • ProductID (Foreign Key referencing Product table)
    • AdjustmentDate
    • QuantityAdjustment
  6. StockHistory:

    • HistoryID (Primary Key)
    • ProductID (Foreign Key referencing Product table)
    • TransactionID (Foreign Key referencing Transaction table)
    • StockQuantityBefore
    • StockQuantityAfter

This schema covers the basic entities needed for a stock management system. Here are some explanations:

  • Products represent the items in the inventory, with details like name, description, category, supplier, cost price, selling price, and current stock quantity.
  • Categories help organize products.
  • Suppliers provide products to the stock, and their information is stored in the Supplier table.
  • Transactions capture the movement of stock, including purchases and sales, with details like the product involved, transaction type, date, quantity, unit price, and total amount.
  • StockAdjustment records adjustments made to the stock quantity, for example, for returns or corrections.
  • StockHistory keeps a record of changes in stock quantity over time, linking back to the original transaction.

Depending on the specific requirements of your stock management system, you may need to expand or modify this schema. Consider additional features such as warehouse management, batch tracking, expiration dates, or any other information relevant to your stock management platform.