Can anyone recommend a java book to learn XML concepts used in Web Services ? I'm mainly interested in learning the basics of XML that are commonly used in web services, as well as JAXB and a little bit of XSLT
...Was studying Java Web Services : Up and Running but started getting lost when I got to the section where it explains how JAXB works so I thought I better spend some time learning XML stuff before continuing....
Are the chapters on UDDI necessary/useful to read when preparing for the certification?
EDIT : From objectives
Describe the function of JAXR in Web service architectural model, the two basic levels of business registry functionality supported by JAXR, and the function of the basic JAXR business objects and how they map to the UDDI data structures.
Create JAXR client to connect to a UDDI business registry, execute queries to locate services that meet specific requirements, and publish or update information about a business service.
Depends on which version of the certification you are aiming for.
If you are considering the JavaEE 5 version, then I would recommend the UDDI chapters in the RMH book. It contains good explanations of the UDDI data structures.