Data Transformation Engine Type Tree Importers Reference Guide

Chapter 2 - Using the Importer Wizard XML Schema Importer

Type Tree Importers Reference Guide

The Person element’s type contains a sequence of elements, represented by the

Comp category. This category has two child nodes that represent the two

sequence member elements: Name, and Address.

The Name element is of simple text type. For this reason it is represented by the

Name item in the type tree.

The Address element is of complex type. This complex type name is also

Address.

The element is represented with the Address category. If you look at

ElementDecl group for this element, notice that it contains the TypeDef group of

the Address type. This is done to make the type tree shorter and to reuse the

existing definition of the global types in the type tree.

ElementDecl group of the Person element represents the entire content of the

Person element which includes Person’s attributes (AttrList) as well as Person’s

subelements (Seq).

Doc Group

The Doc group represents the whole XML instance document.

This includes the Prolog of the document and the top-level element of the

instance document – ElementDecl group of the Person element.

In this example, only one global element is declared in the schema - Person. For

that reason it is directly included in the Doc group. If more than one global

element was declared in the schema, a choice group named Global would be

defined as a choice selection for the elements because the XML instance document

must have only one root element. In that case, this Global group would be

included in the Doc group along with the Prolog.