... Previous: Specifics on a XML Data Format for Scientific Data . ... Metadata processing is an essential part of the Astronomy Digital Image Library (ADIL) and the BIMA Image Pipeline because of their complex and evolving data models. In order to choose the best technical solutions for these systems, a number of techniques have been evaluated; XML, Java, XSLT, DOM and Quick are described here. ... Both projects make a heavy use of metadata, i.e., information about the processed data. ...