Query languages for relational multidatabases
Identifieur interne : 001468 ( Istex/Corpus ); précédent : 001467; suivant : 001469Query languages for relational multidatabases
Auteurs : John Grant ; Witold Litwin ; Nick Roussopoulos ; Timos SellisSource :
- The VLDB Journal [ 1066-8888 ] ; 1993-04-01.
Abstract
Abstract: With the existence of many autonomous databases widely accessible through computer networks, users will require the capability to jointly manipulate data in different databases. A multidatabase system provides such a capability through a multidatabase manipulation language, such as MSQL. We propose a theoretical foundation for such languages by presenting a multirelational algebra and calculus based on the relational algebra and calculus. The proposal is illustrated by various queries on an example multidatabase. It is shown that properties of the multirelational algebra may be used for optimization and that every multirelational algebra query can be expressed as a multirelational calculus query. The connection between the multirelational languages and MSQL, the multidatabase version of SQL, is also investigated.
Url:
DOI: 10.1007/BF01232185
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databases widely accessible through computer networks, users will require the capability to jointly manipulate data in different databases. A multidatabase system provides such a capability through a multidatabase manipulation language, such as MSQL. We propose a theoretical foundation for such languages by presenting a multirelational algebra and calculus based on the relational algebra and calculus. The proposal is illustrated by various queries on an example multidatabase. It is shown that properties of the multirelational algebra may be used for optimization and that every multirelational algebra query can be expressed as a multirelational calculus query. The connection between the multirelational languages and MSQL, the multidatabase version of SQL, is also investigated.</Para></Abstract><KeywordGroup Language="En"><Heading>Key Words</Heading><Keyword>Multidatabase</Keyword><Keyword>multirelational algebra</Keyword><Keyword>multirelational calculus</Keyword><Keyword>query optimization</Keyword></KeywordGroup></ArticleHeader><NoBody></NoBody></Article></Issue></Volume></Journal></Publisher></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Query languages for relational multidatabases</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Query languages for relational multidatabases</title></titleInfo><name type="personal"><namePart type="given">John</namePart><namePart type="family">Grant</namePart><namePart type="termsOfAddress">Ph.D.</namePart><affiliation>Dept. of Computer and Information Sciences, Towson State University, 21204, Towson, MD</affiliation><role><roleTerm type="text">author</roleTerm></role><description>Professor</description></name><name type="personal"><namePart type="given">Witold</namePart><namePart type="family">Litwin</namePart><namePart type="termsOfAddress">Ph.D.</namePart><affiliation>Universite Paris Dauphine, Pl. du Mal. de Lattre de Tassigny, 75775, Paris Cedex 16, France</affiliation><role><roleTerm type="text">author</roleTerm></role><description>Professor</description></name><name type="personal"><namePart type="given">Nick</namePart><namePart type="family">Roussopoulos</namePart><namePart type="termsOfAddress">Ph.D.</namePart><affiliation>Dept. of Computer Science, University of Maryland, 20742, College Park, MD, USA</affiliation><role><roleTerm type="text">author</roleTerm></role><description>Professor</description></name><name type="personal"><namePart type="given">Timos</namePart><namePart type="family">Sellis</namePart><namePart type="termsOfAddress">Ph.D.</namePart><affiliation>Dept. of Computer Science, University of Maryland, 20742, College Park, MD, USA</affiliation><role><roleTerm type="text">author</roleTerm></role><description>Associate Professor</description></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="OriginalPaper"></genre><originInfo><publisher>Springer-Verlag</publisher><place><placeTerm type="text">Berlin/Heidelberg</placeTerm></place><dateCreated encoding="w3cdtf">1990-12-05</dateCreated><dateIssued encoding="w3cdtf">1993-04-01</dateIssued><copyrightDate encoding="w3cdtf">1993</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType></physicalDescription><abstract lang="en">Abstract: With the existence of many autonomous databases widely accessible through computer networks, users will require the capability to jointly manipulate data in different databases. 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For example, one database may use client-name, while another may use cl-narne for the same attribute</title><imprint></imprint></monogr></biblStruct><biblStruct xml:id="b1"><monogr><title level="m" type="main">The same client may be represented in several databases</title><imprint></imprint></monogr></biblStruct><biblStruct xml:id="b2"><analytic><title level="a" type="main">despite sometimes having the same column names In order to handle such heterogeneity, MSQL provides some basic language constructs to (a) express queries ranging over sets of databases, and (b) address attributes by specifying a prefix and not a complete attribute name. For example, the following MSQL query: USE etoile SELECT * FROM client allows the formation of a simple SQL query on the etoUe database</title></analytic><monogr><title level="m">Primary key values in databases of different banks are independent</title><imprint><publisher>ACM Computing Surveys</publisher><date type="published" when="1990"></date></imprint></monogr></biblStruct><biblStruct xml:id="b3"><analytic><title></title><author><persName><forename type="first">S</forename><surname>Ceri</surname></persName></author><author><persName><forename type="first">G</forename><surname>Pelagatti</surname></persName></author></analytic><monogr><title level="m">Distributed Databases: Principles and Systems</title><meeting><address><addrLine>New York</addrLine></address></meeting><imprint><publisher>McGraw Hill</publisher><date type="published" when="1984"></date></imprint></monogr></biblStruct><biblStruct xml:id="b4"><monogr><title level="m" type="main">A Guide to DB2 Information Processing Systems: Database Language SQL, Draft International Standard</title><author><persName><forename type="first">C</forename><forename type="middle">J</forename><surname>Date</surname></persName></author><imprint><date type="published" when="1983"></date><publisher>Addison-Wesley</publisher><pubPlace>Reading, MA</pubPlace></imprint></monogr></biblStruct><biblStruct xml:id="b5"><analytic><title></title><author><persName><forename type="first">W</forename><surname>Litwin</surname></persName></author><author><persName><forename type="first">A</forename><surname>Abdeuatif</surname></persName></author><author><persName><surname>Interoperability</surname></persName></author></analytic><monogr><title level="j">IEEE ComputerJourna~</title><imprint><biblScope unit="volume">12</biblScope><biblScope unit="page" from="10" to="18"></biblScope><date type="published" when="1986"></date></imprint></monogr></biblStruct><biblStruct xml:id="b6"><analytic><title level="a" type="main">SIRIUS Systems for Distributed Data Management</title><author><persName><forename type="first">W</forename><surname>Litwin</surname></persName></author></analytic><monogr><title level="m">Distributed Databases</title><editor>Schneider, H.J.</editor><meeting><address><addrLine>New York</addrLine></address></meeting><imprint><publisher>North-Holland</publisher><date type="published" when="1982"></date></imprint></monogr></biblStruct><biblStruct xml:id="b7"><analytic><title></title><author><persName><forename type="first">W</forename><surname>Litwin</surname></persName></author><author><persName><forename type="first">A</forename><surname>Abdellatif</surname></persName></author><author><persName><forename type="first">A</forename><surname>Zeroual</surname></persName></author><author><persName><forename type="first">B</forename><surname>Nicolas</surname></persName></author><author><persName><forename type="first">Vigier</forename></persName></author></analytic><monogr><title level="j">Information Sciences</title><imprint><date type="published" when="1989"></date></imprint></monogr></biblStruct><biblStruct xml:id="b8"><analytic><title level="a" type="main">Principles and techniques in the design of ADMS</title><author><persName><forename type="first">N</forename><surname>Roussopoulos</surname></persName></author><author><persName><forename type="first">H</forename><surname>Kang</surname></persName></author></analytic><monogr><title level="j">IEEE Computer Journal</title><imprint><biblScope unit="volume">12</biblScope><biblScope unit="page" from="19" to="25"></biblScope><date type="published" when="1986"></date></imprint></monogr></biblStruct><biblStruct xml:id="b9"><analytic><title level="a" type="main">Multiple-query optimization</title><author><persName><forename type="first">T</forename><surname>Sellis</surname></persName></author></analytic><monogr><title level="j">A CM Transactions on Database Systems</title><imprint><biblScope unit="volume">1</biblScope><biblScope unit="issue">13</biblScope><biblScope unit="page" from="23" to="52"></biblScope><date type="published" when="1988"></date></imprint></monogr></biblStruct><biblStruct xml:id="b10"><analytic><title level="a" type="main">The design of POSTGRES</title><author><persName><forename type="first">M</forename><surname>Stonebraker</surname></persName></author><author><persName><forename type="first">L</forename><surname>Rowe</surname></persName></author></analytic><monogr><title level="m">Proceedings of the 1986 ACMoSIGMOD Conference</title><meeting>the 1986 ACMoSIGMOD Conference<address><addrLine>Washington, DC</addrLine></address></meeting><imprint><date type="published" when="1986"></date></imprint></monogr></biblStruct><biblStruct xml:id="b11"><analytic><title></title><author><persName><forename type="first">J</forename><forename type="middle">D</forename><surname>Ullman</surname></persName></author></analytic><monogr><title level="m">Principles of Database Systems</title><meeting><address><addrLine>Rockville, MD</addrLine></address></meeting><imprint><publisher>Computer Science Press</publisher><date type="published" when="1982"></date></imprint></monogr><note>Second. 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