The Oracle Text Reference 10g states that when we index our table using multi-column datastore, the system concatenates the text columns, tagging the column text, and indexes the text as a virtual XML document for each row.
Also, in certain situations, we can use user datastore to define stored procedures that synthesize documents during indexing. The procedure can grab the data and put them in an XML format. A good example is shown here.
Is there a way to retrieve or display the underlying virtual XML document for each record? How?