A nursing information system (NIS) is defined as integrating nursing science, computer science, and information science to manage and communicate patient data, information, and knowledge to support nursing practice. The purpose of a NIS is to create usable patient data, process information to support management functions, assist in patient care decisions, and formulate nursing care plans. A NIS has advantages like easy access to data, time savings, and quality checks, but also disadvantages like threats to data security and overdependence on technology.