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Cooperation between Autonomous Operation Services and Object Database Systems in a Heterogeneous Environment
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| Title |
Cooperation between Autonomous Operation Services and Object Database Systems in a Heterogeneous Environment |
| Author(s) |
H.-J. Schek, A. Wolf |
| Type |
inproceedings |
| Booktitle |
Proc. of the IFIP TC2/WG2.6 Conf. on Semantics of Interoperable Database Systems, DS-5Lorne, Victoria, Australia publisher : D. K. Hsiao, E. J. Neuhold, R. Sacks-Davis, Elsevier (North-Holland) |
| Organization |
Institute of Information Systems, ETH Zurich |
| Month |
November
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| Year |
1992 |
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Abstract
The cooperation between a database system and an operation service
providing application-specific computation on behalf of the
database has important advantages. It allows to utilize (existing
or newly developed) software modules which may run in a different
system environment (supporting heterogenity). And it provides
more protection which is a key problem in extensible databases
when foreign code has to be linked to the database code (avoiding
the "Trojan Horse" problem). Such an architecture causes higher
execution cost. Therefor in this paper we are interested in the
cost factors occuring when a method invocation and computation is
done "outside" the kernel object manager. If we have the choice,
we want to know whether we should send an object to an operation
whenever we need a computation to be performed on it rather than
have the method sent and linked to the object manager. We will
present first considerations to these questions and give examples
which show that operation services are a viable solution providing
increased interoperability between databases and applications.
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