Results 1 - 10 of 93

Retrieving And Integrating Datafrom Multiple Information Sources

by Yigal Arens , Chin Y. Chee, Chun-Nan Hsu, Craig A. Knoblock , 1993
"... With the current explosion of data, retrieving and integrating information from various sources is a critical problem. Work in multidatabase systems has begun to address this problem, but it has primarily focused on methods for communicating between databases and requires significant effort for e ..."
Abstract - Cited by 332 (31 self) - Add to MetaCart
With the current explosion of data, retrieving and integrating information from various sources is a critical problem. Work in multidatabase systems has begun to address this problem, but it has primarily focused on methods for communicating between databases and requires significant effort

Multidatabase Query Optimization

by Cem Evrendilek, Asuman Dogac, Sena Nural, Fatma Ozcan, Tamer Ozsu - Distributed and Parallel Databases , 1997
"... . A multidatabase system (MDBS) allows the users to simultaneously access heterogeneous, and autonomous databases using an integrated schema and a single global query language. The query optimization problem in MDBSs is quite different from the query optimization problem in distributed homogeneous d ..."
Abstract - Cited by 20 (3 self) - Add to MetaCart
. A multidatabase system (MDBS) allows the users to simultaneously access heterogeneous, and autonomous databases using an integrated schema and a single global query language. The query optimization problem in MDBSs is quite different from the query optimization problem in distributed homogeneous

Transaction Management on Multidatabase Systems

by Kenneth Barker , 1990
"... Two components of transaction management in multidatabase systems are concurrency control and reliability. Multidatabase systems constructed from autonomous independent database managers are an alternative to homogeneous integrated distributed database systems. Multidatabase transaction management h ..."
Abstract - Cited by 13 (2 self) - Add to MetaCart
has long been of interest, but general solutions have only recently been forthcoming. Early approaches were either read-only or permitted updates to only one of the underlying databases at a time, required modification to the underlying database systems, or suggested that the DBMS scheduler

The CORDS Multidatabase Project

by Gopi K. Attaluri, Dexter P. Bradshaw, Neil Coburn, Per-Åke Larson, Patrick Martin, Avi Silberschatz, Jacob Slonim, Qiang Zhu , 1995
"... In virtually every organization, data is stored in a variety of ways and managed by different database and file systems. Applications that require data from multiple sources are complex because they must be aware of and deal with the specifics of each data source. They must also perform any data int ..."
Abstract - Cited by 7 (5 self) - Add to MetaCart
integration needed, for example, joining data from multiple sources. The objective of a multidatabase system is to provide application developers and end users with an integrated view of and a uniform interface to all the required data. The view and the interface should be independent of where the data

Multidatabase Interdependencies in Industry

by Amit P. Sheth, George Karabatis - Proceedings of the ACM SIGMOD , 1993
"... In this paper we address the problem of data consistency between interrelated data. In industrial environments,lack of consistent data creates difficulties in interoperation between systems and often requires manual interventions to restart operations that fail due to inconsistent data. We report th ..."
Abstract - Cited by 4 (0 self) - Add to MetaCart
the results of a study to understand applicability, adequacy and advantages of a framework we had proposed earlier to specify interdatabase dependencies in multidatabase environments. We studied several existing Bellcore systems and identified examples of interdependent data. The examples demonstrate

Detecting Data Inconsistency for Multidatabases

by Ke Wang, Weining Zhang
"... Traditional approaches to database integration require that a common key exist in all participating relations that model equivalent entities in the real-world, therefore, compromising the logical heterogeneity of multidatabases. The recent proposal of using knowledge to identify equivalententities w ..."
Abstract - Cited by 1 (0 self) - Add to MetaCart
Traditional approaches to database integration require that a common key exist in all participating relations that model equivalent entities in the real-world, therefore, compromising the logical heterogeneity of multidatabases. The recent proposal of using knowledge to identify equivalententities

Ensuring Relaxed Atomicity for Flexible Transactions in Multidatabase Systems

by Aidong Zhang, Marian Nodine, Bharat Bhargava, Omran Bukhres , 1994
"... Global transaction management requires cooperation from local sites to ensure the consistent and reliable execution of global transactions in a distributed database system. In a heterogeneous distributed database (or multidatabase) environment, various local sites make conflicting assertions of auto ..."
Abstract - Cited by 46 (0 self) - Add to MetaCart
Global transaction management requires cooperation from local sites to ensure the consistent and reliable execution of global transactions in a distributed database system. In a heterogeneous distributed database (or multidatabase) environment, various local sites make conflicting assertions

Using tickets to enforce the serializability of multidatabase transactions

by Dimitrios Georgakopoulos, Marek Rusinkiewicz, Amit Sheth - IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING , 1994
"... To enforce global serializability in a multidatabase environment themultidatabase transaction manager must take into account the indirect (transitive) conflicts between multidatabase transactions caused by local transactions. Such conflicts are difficult to resolve because the behavior or even the ..."
Abstract - Cited by 45 (0 self) - Add to MetaCart
To enforce global serializability in a multidatabase environment themultidatabase transaction manager must take into account the indirect (transitive) conflicts between multidatabase transactions caused by local transactions. Such conflicts are difficult to resolve because the behavior or even

Realisation of Active Multidatabases by Extending

by Standard Database Interfaces, Christopher Popfinger - Faculty of Computer Science, University of Magdeburg , 2003
"... The continuous progress in communication, networking and database systems demands a new perception of data processing. A growing amount of network-based applications requires access to a multitude of mostly autonomous data sources located in a heterogenous software and hardware environment. Advan ..."
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The continuous progress in communication, networking and database systems demands a new perception of data processing. A growing amount of network-based applications requires access to a multitude of mostly autonomous data sources located in a heterogenous software and hardware environment

Multidatabase Interdependencies in Industry

by Amit Sheth George, George Karabatis - Proceedings of the ACM SIGMOD , 1993
"... In this paper we address the problem of data consistency between interrelated data. In industrial environments,lack of consistent data creates difficulties in interoperation between systems and often requires manual interventions to restart operations that fail due to inconsistent data. We report th ..."
Abstract - Add to MetaCart
the results of a study to understand applicability, adequacy and advantages of a frameworkwehad proposed earlier to specify interdatabase dependencies in multidatabase environments. We studied several existing Bellcore systems and identified examples of interdependent data. The examples demonstrate
Results 1 - 10 of 93