The document summarizes the history and development of Brazil's national health information system. It outlines key events like the creation of the Unified Health System (SUS) in 1990 and the Department of Information Technology of SUS (DATASUS) in 1994. A timeline shows major health databases and systems being established over time from the 1970s to the present. The document also describes how different groups like health managers and educational institutions use information for purposes like strategic planning, epidemiological surveillance, and analyzing health status. It outlines the various health information systems and tools that provide data to support management and decision making in Brazil's public health system.