The second edition of the book Fundamentals of Information Technology deals with IT and related topics from fundamentals to the advanced. This new and revised edition includes new chapters on RDBMS & SOL, modern databases, web technologies and web design, cryptography, computer security, etc. It also includes new and emerging fields of IT like KDD, Al, Bl, ERP, SCM, CRM, mobile computing and business on the Internet, etc. Up-to-date and comprehensive, this book provides information on IT resources, computers, communications systems, micro electronics, networks, software, data, people and so on. The book also discusses the advantages and limitations of the various technological achievements to enable effective use of these resources.