Data systems refer to the technologies and processes used to collect, store, manage, and analyze data in a structured and efficient manner. This encompasses a wide range of tools and techniques, such as databases, data warehouses, data lakes, data integration, data cleansing, data mining, and data visualization. Data systems are essential for organizations to make informed decisions, drive business insights, and gain a competitive edge in today's data-driven world. Researchers in this area focus on developing new methods and technologies to improve the performance, scalability, security, and usability of data systems, as well as exploring new applications and use cases for leveraging data effectively.