XML for GEM ?

• XML is the web distributed object model or

  • XML is ASCII format for database export or
  • XML is universal object serialization technology

• If not XML, would need to design lots of database schema, “CORBA/Java Interface Definitions …”

• XML is just a generalized HTML (or a simplified SGML)

• <faultsegment id=“park101” date=“Jan 1 2000” author=“” source= .. Lat1=“” lat2=“” long1=“” long2=“” depth=“” ..>Part of the Parkfield System</faultsegment><stress type =“prediction” fault=“park101” source=“Multipole Simulation”>(2.3,7.7,-7.2)</stress>

• There are/will be wonderful tools to produce access edit and display XML

• Need to design GEM specific tags

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