View Definition and Generalization for Database Integration in a Multidatabase System

A multidatabase system (MDBS) is a system that integrates several autonomous database systems and provides users with a uniform access to all the databases. In this paper we developed a two-level active metadata dictionary approach for semantic query processing. To capture the global view of data schemas of participating databases which may be heterogeneous, a Hornclause data model is used. The lower-level metadata dictionaries (LLMDs) keep metadata for each corresponding local database in MDBS. The higher-level metadata dictionary (HLMD) integrates the metadata about all LLMDs. The database integration strategy includes two phases: schema translation and schema integration. It is a bottom-up approach integrating schema from the underlying database schemas. The evaluation strategy is a top-down approach. It starts with a query as a global goal to be achieved, unifies and optimizes the query to decompose the goal into subgoals that can be evaluated against extensional database, then translates these subgoals into corresponding queries against underlying DBMSs. To solve the control problem, we employ a G-net model for procedure control and inference control. An experimental implementation in Prolog is described.

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Extending Database Integration Technology

10.21236/ada384411 ◽

1999 ◽

Author(s):

Peter Buneman ◽

S. Davidson ◽

V. Tannen

Keyword(s):

Database Integration ◽

Integration Technology

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SQL Extension for Multidatabase System

2007 International Conference on Computational Science and its Applications (ICCSA 2007) ◽

10.1109/iccsa.2007.42 ◽

2007 ◽

Author(s):

Mi-Yeon Kim ◽

Jung-Min Seo ◽

Chang-Joo Moon

Keyword(s):

Multidatabase System

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Issues and approaches of database integration

Communications of the ACM ◽

10.1145/276404.276408 ◽

1998 ◽

Vol 41 (5es) ◽

pp. 166-178 ◽

Cited By ~ 98

Author(s):

Christine Parent ◽

Stefano Spaccapietra

Keyword(s):

Database Integration

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VaProS: a database-integration approach for protein/genome information retrieval

Journal of Structural and Functional Genomics ◽

10.1007/s10969-016-9211-3 ◽

2016 ◽

Vol 17 (4) ◽

pp. 69-81 ◽

Cited By ~ 4

Author(s):

Takashi Gojobori ◽

Kazuho Ikeo ◽

Yukie Katayama ◽

Takeshi Kawabata ◽

Akira R. Kinjo ◽

...

Keyword(s):

Information Retrieval ◽

Database Integration ◽

Integration Approach ◽

Genome Information

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Comparison of Computational Tools for Protein-Protein Interaction (PPI) Mapping and Analysis

Jurnal Teknologi ◽

10.11113/jt.v63.1226 ◽

2013 ◽

Vol 63 (1) ◽

Cited By ~ 1

Author(s):

Geok Wei Leong ◽

Sheau Chen Lee ◽

Cher Chien Lau ◽

Peter Klappa ◽

Mohd Shahir Shamsir Omar

Keyword(s):

Protein Interactions ◽

Network Visualization ◽

Database Integration ◽

File Format ◽

Output File ◽

Ppi Network ◽

Protein Protein Interactions ◽

Computational Tools ◽

Protein Protein Interaction ◽

Visualization Tools

Several visualization tools for the mapping of protein-protein interactions have been developed in recent years. However, a systematic comparison of the virtues and limitations of different PPI visualization tools has not been carried out so far. In this study, we compare seven commonly used visualization tools, based on input and output file format, layout algorithm, database integration, Gene Ontology annotation and accessibility of each tool. The assessment was carried out based on brain disease datasets. Our suggested tools, NAViGaTOR, Cytoscape and Gephi perform competitively as PPI network visualization tools, can be a reference for future researches on PPI mapping and analysis.

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