Tools for Creating Web Services

This section continues the discussion of tools for creating Web services by exploring the Top-Down, Bottom-Up, and Meet-in-the-Middle approaches, as well as examining how to create simple data-oriented Web services directly from SQL statements.

Top-Down Development

Top-Down development starts by developing the WSDL. As mentioned earlier, Top-Down development normally occurs when standard interfaces are required. For example, an industry association might define a standard interface—for example, to request flight schedules—and publish it. Service providers, such as airlines, would then implement the standard interface so that applications, such as travel agents, would need to handle only one interface as opposed ...

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