latest Java XML technology

Hi, can anyone tell me what's the latest Java XML technology? Is there anything similar to .NET DataSet? I know SDO has a feature "changeSummary" to make the update of XML data easy. Is SDO still a good choice? It looks that SDO is not popular now (correct me if I am wrong). Is JAXB the only popular framework for Java XML? Is it as powerful as .NET DataSet? Thanks

What do you mean by XML technology?
XML itself has barely changed for years.
JAXB models XML as Java objects, which is handy for things like SOAP-based web services, but it's not the same sort of thing as SDO, from what I can gather (never used SDO).