The process of using computers for studying, transmitting and manipulating data falls under the field of information technology. Some of its allied fields include computer hardware and software, e- commerce, internet, telecommunications, etc. Data storage, data retrieval and database management are the key aspects of information technology. This book is a valuable compilation of topics, ranging from the basic to the most complex advancements in this field. This book, with its detailed analyses and data, will prove immensely beneficial to professionals and students involved in this area at various levels.