A relational interface for heterogeneous information sources
The World Wide Web today consists of a vast repository of diverse information distributed geographically across different locations. In the near future, this wealth of information will constitute the major bulk of information resources for digital library systems. To provide integrated access to web...
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1997
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sg-smu-ink.sis_research-19972018-06-22T02:46:42Z A relational interface for heterogeneous information sources NG, Wee Keong LIM, Ee Peng The World Wide Web today consists of a vast repository of diverse information distributed geographically across different locations. In the near future, this wealth of information will constitute the major bulk of information resources for digital library systems. To provide integrated access to web and other kinds of information sources, we believe that it is useful to first classify the space of digital library resources into "collection" and "reference spaces". Searching can be done by first querying the indices or metadata in the reference space, followed by retrieving the documents or data from the collection space. In this paper, we present an integrated SQL query interface for web search engines, bibliographic and relational databases. Bibliographic databases, web search engines and certain structured databases are important sources of information within the reference space. By extending the relational data model and the SQL language with new predicates, our integrated approach permits a user to specify complex queries to any or all of the three types of information sources simultaneously. This complex query service in turn improves the effectiveness of searching within the reference space. 1997-05-01T07:00:00Z text https://ink.library.smu.edu.sg/sis_research/998 info:doi/10.1109/ADL.1997.601208 http://doi.ieeecomputersociety.org/10.1109/ADL.1997.601208 Research Collection School Of Computing and Information Systems eng Institutional Knowledge at Singapore Management University Digital library Database Relational WWW SQL Databases and Information Systems Numerical Analysis and Scientific Computing |
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Digital library Database Relational WWW SQL Databases and Information Systems Numerical Analysis and Scientific Computing NG, Wee Keong LIM, Ee Peng A relational interface for heterogeneous information sources |
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The World Wide Web today consists of a vast repository of diverse information distributed geographically across different locations. In the near future, this wealth of information will constitute the major bulk of information resources for digital library systems. To provide integrated access to web and other kinds of information sources, we believe that it is useful to first classify the space of digital library resources into "collection" and "reference spaces". Searching can be done by first querying the indices or metadata in the reference space, followed by retrieving the documents or data from the collection space. In this paper, we present an integrated SQL query interface for web search engines, bibliographic and relational databases. Bibliographic databases, web search engines and certain structured databases are important sources of information within the reference space. By extending the relational data model and the SQL language with new predicates, our integrated approach permits a user to specify complex queries to any or all of the three types of information sources simultaneously. This complex query service in turn improves the effectiveness of searching within the reference space. |
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text |
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NG, Wee Keong LIM, Ee Peng |
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NG, Wee Keong LIM, Ee Peng |
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NG, Wee Keong |
title |
A relational interface for heterogeneous information sources |
title_short |
A relational interface for heterogeneous information sources |
title_full |
A relational interface for heterogeneous information sources |
title_fullStr |
A relational interface for heterogeneous information sources |
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A relational interface for heterogeneous information sources |
title_sort |
relational interface for heterogeneous information sources |
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Institutional Knowledge at Singapore Management University |
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1997 |
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https://ink.library.smu.edu.sg/sis_research/998 http://doi.ieeecomputersociety.org/10.1109/ADL.1997.601208 |
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