Specifying Object-oriented Federated Database from Existing Databases
In this paper, we present a mapping strategy that is based on a proposed set of DB integration operations. We first define an OO federated DB as a virtual view on multiple OO export DBs. Our DB mapping strategy systematically derives each of the class extents, deep class extents and relationships of...
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| Main Authors: | , , |
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| Format: | text |
| Language: | English |
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Institutional Knowledge at Singapore Management University
1996
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| Subjects: | |
| Online Access: | https://ink.library.smu.edu.sg/sis_research/908 https://ink.library.smu.edu.sg/context/sis_research/article/1907/viewcontent/SpecifyOOFedDBExitingDB_1996.pdf |
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| Institution: | Singapore Management University |
| Language: | English |
| Summary: | In this paper, we present a mapping strategy that is based on a proposed set of DB integration operations. We first define an OO federated DB as a virtual view on multiple OO export DBs. Our DB mapping strategy systematically derives each of the class extents, deep class extents and relationships of the federated DB using an operator tree consisting of the integration operations. This mapping approach differs from the other existing approaches in that it is algebraic based, and is therefore very suitable for implementing federated query processing. |
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