This book is an introduction to the field of Data Integration also covers Different Integration Architectures. The book is intended for use by students of CS/ IT/IS. The general reader will also find this book useful since he requires a basic understanding of Web Services and a rough knowledge of accessing files/data from the Internet. This book tries to cover many aspects of Data Integrations in Different Integration Architectures. Nowadays (most companies¿ existence depends on data flow When plenty of information is generally accessible and one can find almost everything he needs, managing became easier than ever before) Data Integration is used everywhere, for extracting, transforming and loading integrated data across machines, storing data in datawarhouses/data repositories, invoking business intelligence applications; and online analytical processes (OLAP), online transaction processes (OLTP) and some time in decision making process on remote servers,and so on.