Hi, We are looking at GLUE2 XML realizations, i.e., the official but a little obsolete one (http://schemas.ogf.org/glue/2008/05/spec_2.0_d42_r01) and the NorduGrid one (http://svn.nordugrid.org/trac/nordugrid/browser/arc1/trunk/doc/tech_doc/info.... (We are also aware of the TeraGrid GLUE2 XML schema.) The official schema and the NorduGrid schema are similar. Both define only a single XML element: <Domains>. And all the other entities are defined as XML types instead of elements. Thus they can be included in <Domains> but can never stand on their own. Therefore, under this design, in order to update a single piece of information, for instance, Domains/AdminDomain/Services/ComputingService/RunningJobs, one has to re-publish the whole AdminDomain. Our observation is that the current design of GLUE2 XML schema is not optimised for updating part of the information. Is this because updating part of the information is never an intended usage pattern of GLUE? A validity attribute is defined for each entity. We assume the intended usage pattern of GLUE information model (including the XML realization) is to PERIODICALLY publish ALL the information once the validity period expires. Are we correct? Many thanks! -- Dr. Weijian Fang OMII-UK 4067 Building 32 School of Electronics and Computer Science University of Southampton Southampton SO17 1BJ United Kingdom