Thepresent book "Geo-informatics" has been designed and developed inaccordance with the syllabus prescribed for the Geo-informatics paper of MCA,M.Sc., MA (Geography), B. Tech., BCA and B.Sc., course of various universitiesand institutions. The basic objective of the book is to explain GeographicalInformation System in the interesting way in context of Information Science. Itis an attempt to present spatial data study in computerized manner so thosestudents who are not having Geographical and Computer Science background mayalso grasp the fundamental and advancements of subject as Geo-informatics isone of the interdisciplinary paper. The book tries to explain how geographicalinformation system works in association of other subjects. The book also givesa broader view about storing process of GIS data in various formats.