A business service can be understood as a program that provides a predefined set of functions. A function, in general programming terminology, is a part of a program and has defined input and output parameters. Business services are defined in the Siebel Repository and contain methods, which themselves have input or output method arguments.

The following diagram compares Siebel Business Services with general programming terms:

We can use Siebel Tools to inspect the structure of the business services, which could be either delivered with the Siebel out of the box repository or written by custom developers.

To do so, we navigate to the Business Service type in the Object Explorer and select the desired business service from the list. When we expand the Business Service type, we can inspect the methods and by expanding the Business Service Method type, we can inspect the input and output arguments of each method.

Developers who take a first look at the impressive...