A Federated Information System requires that multiple (often heterogenous) information systems are integrated to the extent that they can share data through views. One issue faced during the construction of federated view schemata is the continuous need to extract metadata from cooperating systems. This is more pressing in the case of federated multimedia systems where needless transfer of large binary objects affects system performance. Where participating systems employ an object-oriented common model to communicate, obtaining metadata is problematic due to the type and complexity of object-oriented metamodels. In the IOMPAR project, we specified and developed a high-level query interface for the ODMG schema repository in order to simplify this task for integration system engineers. This paper describes a schema repository query language which greatly reduces the efforts of integration engineers.
|Cite as: Roantree, M. (2002). Metadata Management in Federated Multimedia Systems. In Proc. Thirteenth Australasian Database Conference (ADC2002), Melbourne, Australia. CRPIT, 5. Zhou, X., Ed. ACS. 147-155. |
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