An XML group is a related set of elements with the same parent element. The elements in an XML group are at the same hierarchy level in the XML definition.
For example, you have the following XML structure:
The XML structure has a Catalog XML group and a Book XML group. The Catalog XML group contains the <Book> element. The Book XML group contains the <Author> and <Title> elements.
When you add an XML file to a single-table constraint or table pair, you select an XML group. The child elements of the XML group appear as table columns in the single-table constraint or table pair. For example, you add the Book XML group to a single-table constraint. Author and Title appear as columns in the single-table constraint. You can create single-table constraint tests on these columns.
An XML group in Data Validation Option is equivalent to an XML view in PowerCenter.