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Performance is a major issue in the acceptance of object-oriented database management systems (OODBMS). The nested index and path index schemes have been criticized for their heavy costs and poor handling of update operations. This paper re-evaluates three index schemes (nested index, path index, and multi-index) applicable to queries on nested attributes.(More)
We describe the model and implementation of two approaches for method execution in distributed object query processing. The first approach is the traditional data migration approach in which remote data accesses (if required) are made to compose an in-memory object at the query site which is followed by method invocation on this object. The second approach(More)
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