tailieunhanh - Real World XML Web Services

Web services are the next revolution in the way applications are built and used. This book will give developers the information they need to design and build next generation distributed interoperable applications with Web services. It has a unique blend of theory and practice, and is focused on Visual Basic developers. The first four chapters explain the architectural foundation on which Web services are built. | t 7 Ktilh . h lỉ n kli jjrt M Mq M iwf-krs Mh I. vm A4IW1 Skann rd. kiíiPuíĩủĩ QttPx hhrtMM p44 Real World XML Web Services Fqr V0 and VB FNET ŨỆvẼlứperỉ Yasser Shohoucf Jource Code Real World XML Web Services By Yasser Shohoud Copyright Pearson Education All chapters on this site are drafts. These chapters will change before the book is published. Download all of the book s code here. - Chapter P Preface There s no doubt that the Web was a catalyst for a revolution that changed the lives of software developers and end users alike. Web services provide the foundation for another profound revolution in the way we build and use applications. It is up to developers like you and I to take this foundation and make the revolution happen. With this book I aim to give you the information and insight you need to design and build next generation distributed interoperable applications with Web services. - Chapter 1 Introduction to Web Services You ve probably heard about Web services and may have read about them. It seems like every trade publication book and Web site has some mention of Web services. Unfortunately most of the current coverage of Web services does not clearly explain what they are really all about they just trumpet how wonderful Web services are which comes across as hype. In this chapter I focus on two things Explaining what Web services are really all about and showing you scenarios where you would use Web services and scenarios where you really should not use them. - Chapter 2 XSD The Web Services Type System Web services are all about data exchange between heterogenous applications. This data exchange cannot be accomplished without a common agreed upon type system that provides standard types as well as the ability to define your own types. This chapter is designed to first getyou up and running with XSD the Web services type system then show you how XSD is used to specify message formats and validate data exchanged between client and .