1. CIS 451: Web Services Dr. Ralph D. Westfall March, 2009

2. Web Services Are Part of.NET data available through the Internet converted into and sent as XML could be sold to users, or used as part of other applications reservation systems comparison shopping business to business (BTB) transactions setting up appointments, etc.

3. What Is a Web Service? way of providing information over the Internet that gets data: from applications coded in different languages and running on different operating systems in a secure way in a format that can be used by clients running on different operating systems

4. What Is a Web Service? software that: is available over the Internet uses XML to receive requests and send data should have: a public interface ways for providers to publicize it and users to find it

5. A Web Service Definition self-describing, self-contained, modular unit of application logic provides business functionality to other applications through Internet connections applications access web services via web protocols and data formats HTTP and XML no need to know how web service is implemented by the provider

6. Definition (continued) web services can be mixed and matched with other web services to execute a larger workflow conduct a business transaction

7. Web Services Examples web services can provide data to be used by programs stock prices, address validation, zip code information, sales tax rates (differ by county) web services search engine slow limit of 5 queries per hour

8. Why Web Services? Technical platform independent reduce cost of providing information reduce cost of acquiring information from local systems or over Internet read XML data rather than from a file used by a particular operating system reduce development time

9. Why Web Services? Business make it easier to integrate business processes increased automation of existing processes developing new processes by combining parts from other processes

10. Microsoft Office Bridge connects Office applications (Excel, Outlook (calendar), etc. to web services runs with VS.NET 2003 also requires Windows Server 2003, Office Professional Edition 2003, SQL Server 2000 (with recent service pack) Microsoft Office Business Applications presentation (16 min) presentation

11. Amazon's Web Services What is AWS? Create/ sign in to an Amazon Web Services Account Create/ sign in to an Amazon Web Services Account Web Services Demonstration

12. Web Services Components overview with diagrams overview XML describes information sent (FAQ)FAQ WSDL tells what can do with it WSDL web services description language SOAP makes it possible to use them SOAP simple object application protocol UDDI could help find web services UDDI universal description, discovery, integration

13. UDDI Universal Description, Discovery and Integration provides capabilities for: describing services discovering businesses that provide them integrating services into applications

14. UDDI Benefits for users find services (like using a search engine) figure out to use them for providers reaching new customers (global reach) serving customers better expanding product offerings

15. UDDI Resource Links Network World web pageweb page includes Microsoft UDDI Business Registry, UDDI Search Engine, UDDI Browser, etc. hit counters on links show very little traffic Microsoft shut down its UDDI in January 2006shut down its UDDI

16. SOAP Excellent Flash demonstrationFlash makes it possible for objects coded in different languages to easily send and receive messages from each other developed by Microsoft makes Microsoft operating systems and languages more compatible with Java applications over the Internet

17. SOAP Request & Response UDDI Browser page XML request searching EDGAR for a specific company XML response is formatted into HTMLformatted into HTML Google request and response XML code examples (scroll to bottom of page) examples more SOAP examplesexamples

18. WSDL Web Services Description Language based on XML describes type, format and capabilities of information from a web service how to get information from it WSDL document structure snowboard SOAP/WSDL example

19. Web Service XML Examples W3Schools web service returns XML W3Schools sample code puts XML feed into web page ASP.NET custom control to look up area codes by zip codescustom control WebserviceX.NET (service provider) WebserviceX.NET

20. Conclusion web services offer a lot of potential up to this point, there has been a lot more hype than actual usagehype being implemented more as an integration tool within organizations than in a business-to-business modeintegration tool within organizations

21. A Visual Studio Web Service Create Web Site>ASP.NET WebService>[rename] OK Set Service.asmx as the Start Page>Run the code>[enable debugging]>OK>click Hello World link>click Invoke click Hello World link to see code and more information

22. Web Services Tutorials Creating and Consuming.NET Web Services in Five Easy Steps Creating and Consuming.NET Web Services in Five Easy Steps Using Web Services with VB.NET Build Your First Web Service with Visual Studio.NET Build Your First Web Service with Visual Studio.NET Web Reference, ASP.NET Web Application and XML Web Service Web Reference, ASP.NET Web Application and XML Web Service

23. The End following slides were removed because of lower value to the presentation

24. Google Web APIs can use Google as web service to provide data to.NET programs could download developer's kit and sign updownload developer's kit and sign up usable with Java, Perl, Ruby, C# supposedly works with any.NET language FAQs

25. Activity: Web Services Contest look at Microsoft/Amazon Web Services Developer ContestMicrosoft/Amazon Web Services Developer Contest identify issues amount of prize? other awards or incentives? judging criteria how much programming skill required

26. eBay's Web Services Developers Program eliminated costs on 11/14/2005 to encourage more activity too late to submit to eBay Developer Challenge 2006eBay Developer Challenge 2006 Find an Idea to Build