Designing, developing, testing and managing software programs and systems encompass the field of software engineering. Due to its susceptibility to changes, the field is making advancements every now and then. The book, now in its Fifth Edition, has been restructured and revised completely to study the latest trends and developments in the field. It illustrates various emerging frameworks of software testing and designs in traditional, structured and unstructured environments. Several worked-out examples and practice problems have been included in each chapter. NEW TO THIS EDITIONIn almost every chapter, several sections have been completely rewritten to increase readability. Several new topics on latest development have been included in almost every chapter, such as agile development using SCRUM, MC/DC testing, quality models, etc. A large number of additional multiple choice questions and review questions have been added in all the chapters to help students understand the concepts readily.