Entity relationship.

This is the default import mode for source or target definitions imported from a WSDL. Use this import mode to create relationships between views instead of one large hierarchy. When you create a web service source or target with an entity relationship, the Designer generates separate views for multiple-occurring elements and complex types. The Designer includes views for all derived complex types.

Normalized hierarchical relationship.

In a normalized hierarchical view, every element or attribute appears once. One-to-many relationships become separate XML views with keys to relate the views.

Do not generate XML views.

Use this import mode to create the source or target definition without defining the XML views. You can use the WSDL workspace to add the XML views and ports.