Model Problems in Technologies for Interoperability: Web Services

Abstract vii 1 Introduction 1 2 Model Problem Process Applied to an Evaluation of Web Services for Interoperability 3 2.1 Identify Model Problem Context 3 2.2 Develop Hypotheses 4 2.3 Develop Criteria for Hypotheses 4 2.4 Design and Implement Model Solution 5 3 Evaluation 9 3.1 Results for Hypothesis 1 9 3.1.1 Web Services Standards are Emerging 10 3.1.2 The Differences Between Development and Deployment Environments Can Be Problematic for Web Services 11 3.1.3 Making Wrapper Code Available Simplifies Development on the Same Platform 12 3.2 Results for Hypothesis 2 13 3.2.1 WSDL Is Not Enough to Describe All Aspects of Services.......14 3.2.2 Service Granularity Can Have a Large Impact on Performance 17 3.2.3 There Is Not Yet a Market for Services 17 3.3 Results for Hypothesis 3 19 3.3.1 Interoperability Testing is Important 19 3.3.2 Tool Interoperability is Crucial 20 3.3.3 Adding Greater Expectations to Web Services Makes It Harder to Achieve Interoperability 21