Delphi Programming Guide
Delphi Programmer 

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Part I - Foundations
  Chapter 1 Delphi 7 and Its IDE
  Chapter 2 The Delphi Programming Language
  Chapter 3 The Run-Time Library
  Chapter 4 Core Library classes
  Chapter 5 Visual Controls
  Chapter 6 Building the User Interface
  Chapter 7 Working with Forms
Part II - Delphi Object-Oriented Architectures
  Chapter 8 The Architecture of Delphi Applications
  Chapter 9 Writing Delphi Components
  Chapter 10 Libraries and Packages
  Chapter 11 Modeling and OOP Programming (with ModelMaker)
  Chapter 12 From COM to COM+
Part III - Delphi Database-Oriented Architectures
  Chapter 13 Delphi's Database Architecture
  Chapter 14 Client/Server with dbExpress
  Chapter 15 Working with ADO
  Chapter 16 Multitier DataSnap Applications
  Chapter 17 Writing Database Components
  Chapter 18 Reporting with Rave
Part IV - Delphi, the Internet, and a .NET Preview
  Chapter 19 Internet Programming: Sockets and Indy
  Chapter 20 Web Programming with WebBroker and WebSnap
  Chapter 21 Web Programming with IntraWeb
  Chapter 22 Using XML Technologies
  Chapter 23 Web Services and SOAP
  Chapter 24 The Microsoft .NET Architecture from the Delphi Perspective
  Chapter 25 Delphi for .NET Preview: The Language and the RTL
  Appendix A Extra Delphi Tools by the Author
  Appendix B Extra Delphi Tools from Other Sources
  Appendix C Free Companion Books on Delphi
  List of Figures    
  List of tables    
  List of Listings    
  List of Sidebars  

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Chapter 23: Web Services and SOAP


Of all the recent features of Delphi, one stands out clearly: the support for web services built into the product. The fact that I'm discussing it near the end of the book has nothing to do with its importance, but only with the logical flow of the text, and with the fact that this is not the starting point from which to learn Delphi programming.

The topic of web services is broad and involves many technologies and business-related standards. As usual, I'll focus on the underlying Delphi implementation and the technical side of web services, rather than discuss the larger picture and business implications.

This chapter is also relevant because Delphi 7 adds a lot of power to the implementation of web services provided by Delphi 6, including support for attachments, custom headers, and much more. You'll see how to create a web service client and a web service server, and also how to move database data over SOAP using the DataSnap technology.

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