PENGEMBANGAN SISTEM INFORMASI PENJUALAN LAPTOP TERINTEGRASI MELALUI PLATFORM OFFLINE DAN ONLINE MENGGUNAKAN METODOLOGI SDLC DAN AGILE

This study aims to develop an integrated laptop sales information system that combines offline and online transaction processes into a single platform. The system is designed using the Agile methodology within the System Development Life Cycle (SDLC) framework. Key stages include system requirement analysis, design through ERD and DFD diagrams, development using PHP and MySQL, and testing using the black-box method. The result of this study shows that the developed system successfully integrates transaction data in real-time, ensuring data consistency and improving operational efficiency. The accuracy of stock data increased by 95%, and reporting time was reduced by 40%. This integration significantly enhances the user experience and management decision-making.