Retail and commerce
Checkout, inventory, pricing, customers, and the report an owner reads after close.
Business challenge
A shop often runs on a cash drawer, a spreadsheet, and someone’s memory. Prices drift, stock is a surprise, and the end of the day does not explain itself.
Intended outcome
Staff can sell, correct, and look up a product without leaving the counter. The owner can see what moved.
Software approach
Model the sale, the catalog, and the stock movement as one system. Prefer a terminal that keeps working when the line is down. Treat payment recording and payment processing as different things.
Example workflows
- Checkout
- Price and catalog changes
- Stock receiving
- Customer lookup
- Daily reporting
Technical considerations
- SQLite or PostgreSQL depending on whether the shop is one terminal or several.
- Barcode scanners and receipt printers are considered only when the shop uses them.
- No payment-network certification is claimed.
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