Purkayastha, SaptarshiBraa, Jørn2016-03-172016-03-172013Purkayastha, S. and Braa, J. (2013) Overview, not Overwhelm – Operational BI Tools for Big Data in Health Information Systems. Operational BI for Healthcare in Developing Countries.https://hdl.handle.net/1805/8896In contexts where fragmentation of information systems is a problem, data warehouse (DW) has brought disparate sources of information together. While bringing data together from multiple health programs and patient record systems, how does one make sense of huge amounts of integrated information? Recent research and industry uses the term, “Operational BI” for decision making tools used in operational activities. In this paper, we highlight the use of DHIS 2, a large-scale, open-source, Health Management Information System (HMIS) that acts as a DW. Firstly, we present the results of a survey done in 13 countries to assess how Operational BI Tools are used. We then show 3 generations of BI Tools in DHIS 2 that have evolved from action-research done over 18 years in more than 30 countries. Secondly, we develop the Overview-Overwhelm (O-O) analytical framework for large-scale systems that need to work with Big Data. The O-O framework combines lessons from DHIS 2 BI Tools design and implementation survey results.en-USoperational BIdata warehousehealth information systemsArticle