The following table lists important namespaces that are used in ABL-generated XML Schema documents.

Table 1. Important namespaces
ABL-used prefix Namespace URL Description 
xsd
 
http://www.w3.org/2001/XMLSchema
 The namespace for the standard XML Schema 1.0 tags, which is often referred to as the XML Schema namespace 
xsi
 
http://www.w3.org/2001/XMLSchema-instance
 The namespace for XML Schema 1.0 instance attributes, which is often referred to as XML Schema-Instance namespace 
prodata
 
urn:schemas-progress-com:xml-prodata:0001
 The namespace for ABL-specific XML Schema extensions associated with the XML features.