Lesbek N2026-02-062026-02-062012Lesbek N / Transforming Use Case Diagrams into Sequence Diagrams Using Kermeta (Payment Server) / Suleyman Demirel University/ СДУ хабаршысы, 12(3 ).https://repository.sdu.edu.kz/handle/123456789/2447This article describes an approach to transforming use case diagrams into sequence diagrams using the Kermeta framework, based on a Payment Server system. The proposed system represents a simplified payment service that enables users to perform payments for various services through banking terminals. The study focuses on distinguishing between Platform Independent Model (PIM) and Platform Specific Model (PSM), where use case diagrams represent functional requirements at an abstract level, while sequence diagrams provide a detailed view of system interactions. The transformation process demonstrates how model-driven engineering techniques can improve clarity, consistency, and efficiency in software development by reducing errors, misunderstandings, and inconsistencies during system design.Attribution-NonCommercial-ShareAlike 4.0 Internationaluse case diagramsequence diagrammodel transformationpayment serversoftware modelingArticle