M. Rusinkiewitz, R. Elmasri, B. Czejdo, D. Georakopoulous, G. Karabatis, A. Jamoussi, K. Loa, and Y. Li. OMNIBASE: Design and implementation of a multidatabase system. In Proceedings of the 1st Annual Symposium in Parallel and Distributed Processing, pages 162-169. IEEE, May 1989.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....static global schema, the loosely coupled architecture allows multiple import schemas, enabling data retrieval directly from the exporter and not indirectly through some central node as in the tightly coupled architecture. Examples of loosely coupled FDBSs are MRSDM [ Litwin, 1985 ] Omnibase [ Rusinkiewitz et al. 1989 ] and Calida [ Jacobsen et al. 1988 ] Resolution of representational di erences is performed manually. Most of the early work on methodologies and mechanisms for integrating individual, user oriented schemata focused on relational and semantic database models, and (partial) uni cation of ....

M. Rusinkiewitz, R. Elmasri, B. Czejdo, D. Georakopoulous, G. Karabatis, A. Jamoussi, K. Loa, and Y. Li. OMNIBASE: Design and implementation of a multidatabase system. In Proceedings of the 1st Annual Symposium in Parallel and Distributed Processing, pages 162-169. IEEE, May 1989.

....Requested data comes from the exporter of this data itself and each component can decide how it will view all the accessible data in the federation. As there is no global schema, each source can create its own federated schema for its needs. Examples of such systems are MRSDM [Lit85] Omnibase [Rea89] and Calida [JPSL 88] As pointed out by Heimbigner and McLeod [HM85] in order to remain autonomously functioning systems and provide mutually beneficent sharing of data at the same time, components of FDBS should have facilities to communicate in three ways: Data exchange The ....

M. Rusinkiewicz and et. al. OMNIBASE: Design and Implementation of a Multidatabase System. In 1st Annual Symposium in Parallel and Distributed Processing, Dallas, Texas, May 1989.

....of the local schema, systems based on multibase query languages have no integration schema. In this model, the global system supports all the global transactions through the use of query language tools which provide the integration of information at the local DBMSs. MRDSM (LITWIN, 1987) OMNIBASE (RUSINKIEWICZ, 1989) and CALIDA (JACOBSON et al., 1988) are projects that accomplish database interaction using multibase query languages. This proposal faces no problems related to the creation and maintenance of a global schema. However, this approach does not provide a transparent data access to accomplish query ....

RUSINKIEWICZ, M., et al., 1989, "OMNIBASE: Design and Implementation of a Multidatabase System". In: Proceedings of 1 th Annual Symposium in Parallel and Distributed Processing, Dallas, Texas, May.

....systems are considered to be cooperative information systems. Global information systems [24] are systems that involve a large number of information resources distributed over computer networks, with autonomous maintenance of data. Global information systems are similar to multidatabases (e.g. [27]) in their approach. Both system types seek to support global updates, while preserving site autonomy. Distributed databases [7] unlike global information systems, do not have a full autonomy of their data. Issues in structuring heterogeneous databases are discussed in [4] and others. Federated ....

M. Rusinkiewicz et al. OMNIBASE: Design and implementation of a multidatabase system. In Proceedings 1st International Conference on Parallel and Distributed Processing, pages 162--169, Dallas, TX, May 1989.

....Research [21] While a more recent example involves the cooperation among information systems through the World Wide Web [14] several research areas have been researching this problem for more than a decade. The research varies from global information systems [13] and multidatabases (e.g. [19]) that seek to support global updates, while preserving site autonomy to distributed databases [5] which do not have full autonomy of their data. To the best of our knowledge, none of the models and methods related with this problem (e.g. the Demarcation protocol [3] and production rules in ....

M. Rusinkiewicz et al. OMNIBASE: Design and implementation of a multidatabase system. In Proceedings 1st International Conference on Parallel and Distributed Processing, pages 162--169, Dallas, TX, May 1989.

....using a single, static global schema, the loosely coupled architecture allows multiple import schemas, enabling data retrieval directly from the exporter and not indirectly through some central node as in the tightly coupled architecture. Examples of loosely coupled FDBSs are MRSDM [33] Omnibase [44], and Calida [23] One reason for the relatively slow progress in the area of integrating multiple heterogeneous databases is that unlike views, heterogeneous databases provide complimentary information, e.g. their object groupings may not have many properties in common. This is not the case with ....

M. Rusinkiewitz, R. Elmasri, B. Czejdo, D. Georakopoulous, G. Karabatis, A. Jamoussi, K. Loa, and Y. Li. OMNIBASE: Design and Implementation of a Multidatabase System. In Proceedings of the 1st Annual Symposium in Parallel and Distributed Processing, pages 162--169. IEEE, May 1989.

.... ACTA: A Framework for Specifying and Reasoning about Transaction Structure and Behavior , Proc.of ACM SIGMOD, p. 194 203, 1990 [3] Jenq, P. D. Woelk, W. Kim, and W. Lee. Query Processing in Distributed ORION , International Conference on Extending Database Technology, p. 169 187, March, 1990. [4] Rusinkiewicz, M. Elmasri, R. Czejdo, B. Georakopoulous, D. Karabatis, G. Jamoussi, A. Loa, L. and Li, Y. 1989. OMNIBASE: Design and Implementation of a Multidatabase System . Proceedings of the 1st Annual Symposium in Parallel and Distributed Processing, pp. 162 169. 5] Sheth, A. M. ....

.... access to all semantically equivalent and relevant information resources, and also groups any updates to these resources as a set of independent transactions that interact according to a dynamically defined relaxed transaction semantics [7] DSQTM is based on the OMNIBASE multidatabase system [4]. Figure 2 is a block diagram of DSQTM. The query graph generator module accepts SQL and generates a query graph using information from a global dictionary. The query graph is annotated with physical information resource locations that were either provided in the initial SQL query or that were ....

Rusinkiewicz, M., Elmasri, R., Czejdo, B., Georakopoulous, D., Karabatis, G., Jamoussi, A., Loa, L. and Li, Y. 1989. "OMNIBASE: Design and Implementation of a Multidatabase System ". Proceedings of the 1st Annual Symposium in Parallel and Distributed Processing, pp. 162-169.

.... DOM objects and data managed by non DOM systems that support transactions (i.e. DBMSs) and do not support transactions ( transactionless systems ) Work on execution of multi system applications in a heterogeneous computing environment has been carried out in the Omnibase project since 1985 [26]. The basic contributions of this project to the workflow management were the development of a task specification language DOL and a distributed execution environment called Narada. The software architecture based on the concept of a task specification language was later adapted and expanded in ....

M. Rusinkiewicz et al. OMNIBASE: Design and Implementation of a Multidatabase System, IEEE CS Distributed Processing Newsletter, Volume 10, Number 2, 1988

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M. Rusinkiewicz, B. Czejdo, R. Elmasri, D. Georgakopoulos, A. Jamoussi, G. Karabatis, Y.Y. Li, and L. Loa. OMNIBASE: Design and Implementation of a Multidatabase System. Distributed Processing TC Newsletter, 10(2):20--28, November 1988.

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M. Rusinkiewicz, R. Elmasri, B. Czejdo, D. Georakopoulous, G. Karabatis, A. Jamoussi, L. Loa, and Y. Li. OMNIBASE: Design and implementation of a Multidatabase System. In Proceedings of the First Annual Symposium in Parallel and Distributed Processing, Dallas, Tex., 1989, pp. 162--169.

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