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  • PowerCenter 10.4.0
  • All Products

Table of Contents

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  1. Preface
  2. XML Concepts
  3. Using XML with PowerCenter
  4. Working with XML Sources
  5. Using the XML Editor
  6. Working with XML Targets
  7. XML Source Qualifier Transformation
  8. Midstream XML Transformations
  9. XML Datatype Reference
  10. XPath Query Functions Reference

XML Guide

XML Guide

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Understanding Hierarchical Relationships

Understanding Hierarchical Relationships

An XML definition with hierarchical view relationships has each element in the hierarchy appear under its parent element in a view. Multiple-occurring elements can become views. Complex types do not become views, and elements unique to derived complex types do not occur in any view.
You can generate the following types of hierarchical view:
  • Normalized views.
     An XML definition with normalized views reduces redundancy by separating multiple-occurring data into separate views. The views are related by primary and foreign keys.
  • Denormalized views.
     An XML definition with a denormalized view has all the elements of the hierarchy that are not unique to derived complex types in the view. A source or target definition can contain one denormalized view.
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