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Optimization Techniques for Queries with Expensive Methods.
June 1, 1998... Object-relational database management systems allow knowledgeable users to define new data types as well as new methods (operators) for the types. This flexibility produces an attendant complexity, which must be handled in new ways for an...
Multiview Access Protocols for Large-Scale Replication.
June 1, 1998... This article proposes a scalable protocol for replication management in large-scale replicated systems. The protocol organizes sites and data replicas into a tree-structured, hierarchical cluster architecture. The basic idea of the protocol...
Ensuring Consistency in Multidatabases by Preserving Two-Level Serializability.
June 1, 1998... The concept of serializability has been the traditionally accepted correctness criterion in database systems. However in multidatabase systems (MDBSs), ensuring global serializability is a difficult task. The difficulty arises due to the...