E-commerce or in Indonesian, namely electronic commerce is the distribution, purchase, sale, marketing of goods and services through electronic systems such as the internet or television, www, or other computer networks. E-commerce may involve electronic fund transfers, electronic data exchange, automated inventory management systems, and automated data collection systems. At this time, the LA-RIS Store has not used the e-commerce facility so that it is difficult to offer products to consumers

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... ho are outside the city. In addition, it can also have an impact on the product sales process, namely the ignorance of consumers who are outside the city of the existence of the LA-RIS Store. The sales process of the LA-RIS Store will only be carried out if there are consumers who come to the store, while many consumers who are outside the city do not know the existence of the LA-RIS Store. To build this e-commerce system, the tools used to describe the system model are in the form of Use case diagrams, Activity Diagrams, and Class Diagrams. Using the PHP programming language and MySQL database. With this e-commerce, it is hoped that it will make it easier for consumers to obtain information about product specifications offered by the LA-RIS Store. Make it easier for LA-RIS stores to offer or sell their products to consumers who are outside the city. Consumers who are outside the city can find out the existence of the LA-RIS store by using this e-commerce service and can order without having to come to the store. Make it easier for consumers in the payment process because there are several options in the payment process. With a good product data processing or management system and equipped with security, it will support the performance of the system.