Data integration is a research area that focuses on the process of combining disparate data from various sources, formats, and structures into a unified view. This process involves cleaning, transforming, and unifying data to ensure consistency, accuracy, and completeness. Data integration aims to provide a holistic and comprehensive view of data for analysis, decision-making, and reporting purposes. This research area encompasses various techniques, tools, and methodologies to facilitate the seamless integration of data from multiple sources.