The exact steps or methods used to find, choose, process, and evaluate material on a subject are known as research methodology. The methodology part of a research paper gives the reader the chance to assess the general validity and dependability of a study.Many people have helped us in ¿nishing this book. They have our great appreci- ation for the long hours and hard work they devoted to ¿nding and developing content. Without their patience and persistent assistance, this book would not have been realized.