This report provides a description of some of the most important Ophidia operators designed and developed with the aim of providing an effective and efficient method of managing and manipulating metadata. It presents also the structure of the metadata storage model and the XML/DTD schema for operators validation.

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• Institute for Earth System Predictions

• Advanced Scientific Computing Division

Authors

• Alessandro D'Anca
• Sandro Fiore
• Andrea Mariello
• Giovanni Aloisio