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The CORDS multidatabase project

G. K. Attaluri, D. P. Bradshaw, N. Coburn, P. A. Larson, P. Martin, A. Silberschatz, J. Slonim, Q. Zhu
1995 IBM Systems Journal  
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.  ...  Consider an application program running on a machine that needs to access data in two different database systems.  ...  Brown (prototype implementation), Zenith Keeping (EMPRESS agent), Brian Minard (view integration and schema integration), Shahrokh Namvar (EMPRESS agent), Glenn N.  ... 
doi:10.1147/sj.341.0039 fatcat:qwbj6vx4zfbt5ogd2hdxzngt3m

Schema architectures and their relationship to transaction processing in distributed database systems

Peter Apers, Peter Scheuermann
1991 Information Sciences  
More recently an additional dimension to the description of data has been identified, the intension-extension dimension [16]. This dimension is important for the description of metadata.  ...  additionat integrity constraints.  ...  We illustrate the problems in schema integration and data integration in multidatabase systems and discuss their impact on query processing.  ... 
doi:10.1016/0020-0255(91)90044-u fatcat:cm5ht3htazhjlcdxwhhllwbtny

SemQL

Jeong-Oog Lee, Doo-Kwon Baik
1999 Proceedings of the eighth international conference on Information and knowledge management - CIKM '99  
An essential prerequisite to achieving interoperability in multidatabase systems is to be able to identify semantically equivalent or related data items in component databases.  ...  And we provide a semantic query language, SemQL, to capture the concepts about what users want.  ...  sources into a multidatabase system, we must consider two views of the integration problem.  ... 
doi:10.1145/319950.320011 dblp:conf/cikm/LeeB99 fatcat:26g6er3wfzhftgtvwxkb2fr75q

Local Schemas Modifications Propagation and Maintenance of Metadata in Multidatabase System

Mohammad Ghulam Ali
2010 International Journal of Computer Applications  
an objected-oriented Global Schema in the multidatabase system.  ...  One of the challenging problems in the multidatabase systems is to find the most viable solution to the problem of interoperability of distributed heterogeneous autonomous local component databases.  ...  STRUCTURAL/DATA LOGICAL MODEL BASED ON ANSI/SPARC The structural/Data Logical model as shown in figure 2 of the MDBS is a 4-tiered client-server model [11] with a single multidatabase server.  ... 
doi:10.5120/1112-1456 fatcat:na3hicgtkvdpjjowve3igjp33e

Biological data integration: wrapping data and tools

Z. Lacroix
2002 IEEE Transactions on Information Technology in Biomedicine  
Our wrappers are composed of a retrieval component based on an intermediate object view mechanism called search views mapping the source capabilities to attributes, and an eXtensible Markup Language (XML  ...  Nowadays scientific data is inevitably digital and stored in a wide variety of formats in heterogeneous systems.  ...  The OPM multidatabase system is based on the OPM [22] to design object views [20] of the sources, and its query language, an OQL-like query language.  ... 
doi:10.1109/titb.2002.1006299 pmid:12075666 fatcat:cs2zc5efwffu5pdxlxsc6oenpi

A parallel logic language for transaction specification in multidatabase systems

Eva Kühn, Ahmed K. Elmagarmid, Yungho Leu, Noureddine Boudriga
1995 Journal of Systems Integration  
This paper addresses these two issues by proposing a logic approach to the integration of database systems.  ...  One is the unsuitability of traditional transaction models, this has lead to the proposal of a new more flexible transaction model.  ...  In [KL88j, a system based on logic programming was described. VIP-MDBS (Vienna Integrated Prolog Multidatabase) extends Prolog by using semantic relations.  ... 
doi:10.1007/bf01974950 fatcat:4qndoamxazdzrlwu34dilcrhcu

Interbase-KB: Integrating a knowledge base system with a multidatabase system for data warehousing

N. Bassiliades, I. Vlahavas, A.K. Elmagarmid, E.N. Houstis
2003 IEEE Transactions on Knowledge and Data Engineering  
The knowledge base system offers in addition a declarative logic language with second-order syntax but first-order semantics for integrating the schemes of the data sources into the warehouse and for defining  ...  This paper describes the integration of a multidatabase system and a knowledge-base system to support the data-integration component of a Data Warehouse.  ...  In this paper we argue that logic offers the desired power and flexibility to data warehousing and we describe the integration of a nonfederated multidatabase system [29] with a knowledge-base system  ... 
doi:10.1109/tkde.2003.1232272 fatcat:fi7q26unlbhwddaltkmfxffhju

Fusionplex: resolution of data inconsistencies in the integration of heterogeneous information sources

Amihai Motro, Philipp Anokhin
2006 Information Fusion  
The methods described in this paper were implemented in a prototype system that provides complete Web-based integration services for remote clients. (A.  ...  The fusion process is controlled with several parameters: (1) with a vector of feature weights, each user defines an individual notion of data utility; (2) with thresholds of acceptance, users ensure minimal  ...  The authorsÕ departure point is a typical information integration system, which is based on a mediator architecture.  ... 
doi:10.1016/j.inffus.2004.10.001 fatcat:mogfkndcnjef5lzo45yvgb3b4q

Multiplex: A Formal Model for Multidatabases and Its Implementation [chapter]

Amihai Motro
1999 Lecture Notes in Computer Science  
Multiplex is based on formal assumptions of integrability, which distinguish between scheme and instance reconcilability among independent databases.  ...  To address this situation, in this paper we de ne a formal model for multidatabases, which we call Multiplex.  ...  Acknowledgment: The author is grateful to Philipp Anokhin who developed the prototype described in Section 5, and to Igor Rakov, who implemented an earlier version of the system.  ... 
doi:10.1007/3-540-48521-x_11 fatcat:33l6776jqra4dnxjlpoy7rahqu

Living with inconsistencies in a multidatabase system

J.R. Getta
2004 Proceedings. 15th International Workshop on Database and Expert Systems Applications, 2004.  
This paper considers multidatabase systems as one of the typical architectures of global information services and addresses a problem of storing and processing inconsistent information in such systems.  ...  This work considers multidatabase systems as one of the typical architectures of global information services and addresses a problem of storing and processing inconsistent information in such systems.  ...  In particular, we consider representation of inconsistent information in a multidatabase system with a relational view of the integrated and re-mote databases and we investigate efficient query processing  ... 
doi:10.1109/dexa.2004.1333593 dblp:conf/dexaw/Getta04 fatcat:api46ija4raidasdevkkwtyoja

A METHODOLOGY FOR QUERY REFORMULATION IN CIS USING SEMANTIC KNOWLEDGE

DANIELA FLORESCU, LOUIQA RASCHID, PATRICK VALDURIEZ
1996 International Journal of Cooperative Information Systems  
We consider a multidatabase system (MDBMS) with a common object-oriented model, based on the ODMG standard, and local databases that may be relational, object-oriented, or file systems.  ...  We present a reformulation algorithm which exploits semantic knowledge, represented as integrity assertions and mapping rules, for semantic rewriting based on pattern-matching.  ...  Their common object model is an object-oriented extension of the relational model based on a description logic.  ... 
doi:10.1142/s0218843096000166 fatcat:gyh7todizrcghcyehlxaahvh5y

DB Integrator: Open Middleware for Data Access

Richard Pledereder, Vishu Krishnamurthy, Michael Gagnon, Mayank Vadodaria
1995 Digital technical journal of Digital Equipment Corporation  
Highly available horizontal partitioned views support continuous distributed processing in the presence of loss of connectivity.  ...  The DB Integrator enables security checks without interfering with the access controls specified in the underlying data sources.  ...  The DBI engineering team designed, implemented, and delivered the product on schedule.  ... 
dblp:journals/dtj/PlederederKGV95 fatcat:tlm6xk2gzjdrrgyqgih56bqebe

Object orientation in multidatabase systems

Evaggelia Pitoura, Omran Bukhres, Ahmed Elmagarmid
1995 ACM Computing Surveys  
A schema integration tool based on this approach is described in Savasere et al. [1991]. Query Processing. help of a global catalog.  ...  Emphasis on structure rather han on behavior DD/DM Language HOSQL Extension of S L 9 Query-based ( ) DML Programming-based and set-oriented QL Extension of a logic- based query language  ... 
doi:10.1145/210376.210378 fatcat:4cmyam4f75gmxca7asm2oodlfy

Database System Architecture – A Walk Through Time: From Centralized Platform to Mobile Computing – Keynote Address [chapter]

Ali R. Hurson, Yu Jiao
2005 Lecture Notes in Computer Science  
Heterogeneous distributed databases are designed to deal with issue of data integration and interoperability.  ...  However, with the advances in technologies this monolithic and top down approach becomes insufficient.  ...  The design of multidatabase is a bottom up approach -i.e., integration and interoperability of pre-existing data bases.  ... 
doi:10.1007/11533962_1 fatcat:e36tkeizefbwbexyoqta7frf3i

A query language and interface for integrated media and alphanumeric database systems [chapter]

Jia-Ling Koh, Arbee L. P. Chen, Paul C. M. Chang, James C. C. Chen
1997 Lecture Notes in Computer Science  
In this paper, we consider a multidatabase system which consists of media databases and traditional alphanumeric databases.  ...  A graphic query interface is also presented to facilitate user-friendly querying in the system.  ...  We h a ve proposed the strategies for schema integration and query processing in a multidatabase system which consists of object databases 10, 1 1 , 12] .  ... 
doi:10.1007/bfb0022059 fatcat:a7p3z4t565gp7lzbw3c2ki2com
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