This article presents an information system developed for the automation of grocery stores based on a three-tier architecture using PHP 8.2 and MySQL. The system provides specialized interfaces for five different user roles, implements a Role-Based Access Control (RBAC) security model, and supports ACID transactions to ensure data integrity and reliability. The solution is specifically adapted to the conditions of Uzbekistan and is capable of operating in both cloud-based and offline environments. The proposed system aims to improve business process efficiency, data management, and transaction security in retail grocery operations.