Erameha and Odoh (2021) noted that manual inventory management is still prevalent in many businesses and presents challenges in effectively monitoring inventories. To address this issue, they designed and implemented a web-based inventory control system using a small medium enterprise (SME) as a case study. The system was designed with tracking methods such as QR codes and barcodes to monitor products from point of purchase to point of sale, between stores, and directly to customers. The system provided precise up-to-date information on inventory levels to the corporate office and allowed authorized users to access the system to perform different functions. The authors found that the inventory control system was a tremendous boost to store managers and the corporate office, as it helped them efficiently monitor transactions across multiple stores, locate items that should be ordered first, and spend less time on inventory management functions. These benefits ultimately led to improved customer service and satisfaction, resulting in increased revenue for the company. CITATIONS: Erameha, K. B., & Odoh, B. I. (2021). Design and Implementation of a Web-Based Inventory Control System Using a Small Medium Enterprise (SME) as a Case Study. NIPES Journal of Science and Technology Research, 3(3), 211-219. The study by Amora et al. (2021) presents the Digital Attendance and Accomplishment Report Monitoring System (DigiAtt), which is designed to address the limitations of the current online attendance system using Google Forms for recording daily time records (DTR) and accomplishment reports. The authors highlight the difficulty of tracking DTR and accomplishment reports with the current system, which records separate responses daily. To overcome this challenge, DigiAtt features a mobile application that allows employees and supervisors to conveniently submit both DTR and accomplishment reports before logging out, facilitating better monitoring of employee performance. Additionally, DigiAtt includes a web application with a dashboard for easy monitoring and printing of reports needed by the administration for work from home arrangements. The researchers employed the Agile: Scrum methodology of software engineering to break user stories/tasks according to priority, conduct daily standup meetings, and communicate consistently with stakeholders until a fully shippable product was delivered. The authors conclude that the convenience provided by DigiAtt in time-in and time-out processes, submission of accomplishment reports, attendance monitoring, and report generation and printing can increase the productivity of office workers, reduce stress and burden on individuals, and fill in the gaps of the current online attendance system. CITATIONS: AMORA, E. N. O., ROMERO, K. V., AMOGUIS, R. C., BERNALES, A. M. J., & ROMERO, P. J. B. (2021). Digital attendance and accomplishment report monitoring system (digiatt). Ioer International Multidisciplinary Research Journal, 3(2), 123-133. The problem of customer acquisition and retention in retail marketing has been extensively studied, with various soft techniques proposed, but they often lack the ability to achieve higher performance and require a strategic approach. Data mining techniques have emerged as a promising solution for addressing these limitations and improving retail marketing performance. As Kumar, Venkatesh, and Rahman (2021) stated in their study on data mining and machine learning in retail business, "the application of data mining techniques has great impact in the development of retail marketing." In their study, they presented a novel customer interest prediction algorithm that uses Multi Variant K-means clustering and pattern mining techniques to support E-Commerce systems. The algorithm identifies purchase histories and enquires of various users and clusters the logs using the Multi Variant K-means clustering algorithm. The method then identifies the list of purchase patterns and determines the concrete interest of the user and similar interested users. Based on this, a set of recommendations is generated for the user to improve customer retention rates. As the authors note, "by identifying the user interest according to their purchase pattern and by generating the recommendations based on the logs of similar interested users, the method supports the customer retention in higher ratio" (Kumar et al., 2021, p. 4). This study highlights the importance of using data mining techniques in retail marketing to improve customer retention and ultimately, business performance. By utilizing these techniques, businesses can gain insights into customer behavior and preferences, and tailor their marketing strategies accordingly. Kumar, M. R., Venkatesh, J., & Rahman, A. M. Z. (2021). Data mining and machine learning in retail business: developing efficiencies for better customer retention. Journal of Ambient Intelligence and Humanized Computing, 1-13. The development of a web-based system for automatic content retrieval database as presented by Korotun, Vakaliuk, and Oleshko (2020) is relevant to the topic of a webbased management system for Nerissa's Grocery Store utilizing data mining and QR code technology. In both cases, the development of a web-based system is necessary to manage and retrieve data efficiently. Additionally, the use of algorithms and patterns to process and analyze data is essential to ensure that the system functions effectively. The implementation of the Template Method architectural pattern in the automatic content filling system can also be applied in the development of a web-based management system for Nerissa's Grocery Store to ensure efficient data processing and management. While the focus of the web-based automatic content retrieval database is different from that of the proposed web-based management system for Nerissa's Grocery Store, the principles and techniques presented in the former can be applied to the latter to improve its functionality and efficiency. CITATIONS: Korotun, O., Vakaliuk, T., & Oleshko, V. (2020). Development of a web-based system of automatic content retrieval database. Available at SSRN 3719834. FOREIGN STUDY This review of literature discusses several studies that are relevant to the development of a web-based management system for Nerissa's Grocery Store utilizing data mining and QR code technology. First, the study by Erameha and Odoh (2021) presents a web-based inventory control system that utilizes QR codes and barcodes to monitor products from purchase to sale, allowing for precise and up-to-date information on inventory levels. This study highlights the importance of efficient inventory management in improving customer service and satisfaction, leading to increased revenue for the business. Second, Amora et al. (2021) designed a Digital Attendance and Accomplishment Report Monitoring System (DigiAtt) to address the limitations of the current online attendance system, allowing for convenient submission of daily time records and accomplishment reports. This study emphasizes the importance of convenient and efficient systems in improving productivity and reducing stress for office workers. Third, Kumar et al. (2021) presented a customer interest prediction algorithm that utilizes data mining techniques to improve customer retention rates in e-commerce systems. This study highlights the importance of utilizing data mining techniques to gain insights into customer behavior and preferences, allowing for tailored marketing strategies and ultimately, improved business performance. Finally, Korotun, Vakaliuk, and Oleshko (2020) developed a web-based system for automatic content retrieval database utilizing algorithms and patterns for efficient data processing and management. This study emphasizes the importance of efficient data management in developing effective web-based systems. Overall, these studies provide valuable insights and techniques that can be applied in the development of a web-based management system for Nerissa's Grocery Store utilizing data mining and QR code technology. By utilizing efficient inventory management, convenient and efficient systems, and data mining techniques, businesses can gain insights into customer behavior and preferences and tailor their marketing strategies accordingly, ultimately leading to improved business performance.