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This paper describes a technique to support interoperable query processing when multiple heterogeneous knowledge servers are accessed. The problem is to support query transformation transparently, so a user can pose queries locally, without any need of global knowledge about diierent data models and schema. In a companion paper, an architecture for(More)
The proliferation of database systems based on diierent data models and query languages has created the need for techniques that support interoperability so that information may be shared among the database systems. This dissertation proposal describes a technique to support interoperable query processing when multiple heterogeneous databases are accessed.(More)
This paper describes a technique to support interoperable query processing, when multiple heterogeneous servers are accessed in a cooperative information system (CoopIS). The problem is to support query transformation transparently, so a user can pose queries locally, without needing global knowledge about di erent data models and schema in the CoopIS. An(More)
This paper describes a technique for information mediation when multiple heterogeneous knowledge and data servers are to be accessed during query processing. One problem is building an intelligent interface between each knowledge server (KS) and its processor (KP); and the second is to provide interoperability among multiple K P/KS so that a query may be(More)
This paper describes a technique to support interoperable query processing, when multiple heterogeneous servers are accessed in a cooperative information system (CoopIS). The problem is to support query transformation transparently, so a user can pose queries locally, without needing global knowledge about di erent data models and schema in the CoopIS. An(More)
This paper describes a technique for information mediation when multiple heterogeneous knowledge and data servers are to be accessed during query processing. One problem is building an intelligent interface between each knowledge server (KS) and its processor (KP); and the second is to provide interoper-ability among multiple KP/KS so that a query may be(More)