THE XML REVOLUTION - TECHNOLOGIES FOR THE FUTURE WEB

From XQuery to SQL

Using a tool like SilkRoute, XQuery queries can be translated into equivalent SQL queries.

As a simple example, the following XQuery query:

//ingredient[@name="butter"]/@amount

corresponds to the simple SQL query:

select ingredient.amount from ingredient where ingredient.name='butter'

This becomes much more complicated for general queries.

The performance of a translated query depends on the shredding.

In response, the LegoDB system performs adaptive shredding.