<![CDATA[The rapid development of information technology has significantly increased the use of digital transactions across various sectors, including banking and e-commerce, making data security a crucial factor in maintaining system integrity, trust, and sustainability. Conventional databases have long been the primary technology for managing transaction data; however, their centralized architecture poses potential security risks, such as data manipulation and cyberattacks. In contrast, blockchain technology offers a decentralized approach that utilizes consensus mechanisms and cryptography to enhance data integrity and transaction transparency. This study aims to analyze and compare the security aspects of blockchain and conventional databases in the context of digital transactions using the Systematic Literature Review (SLR) method. The literature selection process follows PRISMA guidelines, including identification, screening, and eligibility stages, resulting in 26 selected articles from an initial 402 articles indexed in Scopus. The results indicate that blockchain excels in ensuring data integrity and transparency through its distributed and immutable nature, while conventional databases demonstrate superior performance in terms of efficiency, transaction speed, and ease of implementation. Therefore, the choice of technology should be aligned with security requirements, system scale, and organizational operational characteristics, highlighting the importance of selecting appropriate data management solutions to ensure secure and reliable digital transactions.]]>
