{"id":"https://openalex.org/W1561096011","doi":"https://doi.org/10.1016/0169-023x(93)90006-b","title":"An entity-based approach to query processing in relational databases","display_name":"An entity-based approach to query processing in relational databases","publication_year":1993,"publication_date":"1993-03-01","ids":{"openalex":"https://openalex.org/W1561096011","doi":"https://doi.org/10.1016/0169-023x(93)90006-b","mag":"1561096011"},"language":"en","primary_location":{"id":"doi:10.1016/0169-023x(93)90006-b","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0169-023x(93)90006-b","pdf_url":null,"source":{"id":"https://openalex.org/S136993123","display_name":"Data & Knowledge Engineering","issn_l":"0169-023X","issn":["0169-023X","1872-6933"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Data &amp; Knowledge Engineering","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5014374477","display_name":"Kalervo J\u00e4rvelin","orcid":"https://orcid.org/0000-0001-7655-8930"},"institutions":[{"id":"https://openalex.org/I4210133110","display_name":"Tampere University","ror":null,"country_code":"FI","type":null,"lineage":["https://openalex.org/I4210133110"]},{"id":"https://openalex.org/I166825849","display_name":"Tampere University","ror":"https://ror.org/033003e23","country_code":"FI","type":"education","lineage":["https://openalex.org/I166825849"]}],"countries":["FI"],"is_corresponding":true,"raw_author_name":"Kalervo J\u00e4rvelin","raw_affiliation_strings":["Dept. of Information Studies, University of Tampere, P.O. Box 607, SF-33101 Tampere, Finland","Department of Information Studies, University of Tampere, P.O. Box 607, SF\u201033101 Tampere, Finland"],"affiliations":[{"raw_affiliation_string":"Dept. of Information Studies, University of Tampere, P.O. Box 607, SF-33101 Tampere, Finland","institution_ids":["https://openalex.org/I166825849","https://openalex.org/I4210133110"]},{"raw_affiliation_string":"Department of Information Studies, University of Tampere, P.O. Box 607, SF\u201033101 Tampere, Finland","institution_ids":["https://openalex.org/I166825849","https://openalex.org/I4210133110"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5078409065","display_name":"Timo Niemi","orcid":"https://orcid.org/0000-0002-1352-5223"},"institutions":[{"id":"https://openalex.org/I166825849","display_name":"Tampere University","ror":"https://ror.org/033003e23","country_code":"FI","type":"education","lineage":["https://openalex.org/I166825849"]},{"id":"https://openalex.org/I4210133110","display_name":"Tampere University","ror":null,"country_code":"FI","type":null,"lineage":["https://openalex.org/I4210133110"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"Timo Niemi","raw_affiliation_strings":["Dept. of Computer Science, University of Tampere, P.O. Box 607, SF-33101 Tampere, Finland","Dept. of Computer Science, University of Tampere, P.O.Box 607 SF-33101 TAMPERE, Finland#TAB#"],"affiliations":[{"raw_affiliation_string":"Dept. of Computer Science, University of Tampere, P.O. Box 607, SF-33101 Tampere, Finland","institution_ids":["https://openalex.org/I166825849","https://openalex.org/I4210133110"]},{"raw_affiliation_string":"Dept. of Computer Science, University of Tampere, P.O.Box 607 SF-33101 TAMPERE, Finland#TAB#","institution_ids":["https://openalex.org/I166825849","https://openalex.org/I4210133110"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5014374477"],"corresponding_institution_ids":["https://openalex.org/I166825849","https://openalex.org/I4210133110"],"apc_list":{"value":2590,"currency":"USD","value_usd":2590},"apc_paid":null,"fwci":1.9149,"has_fulltext":false,"cited_by_count":8,"citation_normalized_percentile":{"value":0.85962937,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"10","issue":"2","first_page":"117","last_page":"150"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10317","display_name":"Advanced Database Systems and Queries","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10317","display_name":"Advanced Database Systems and Queries","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11106","display_name":"Data Management and Algorithms","score":0.9990000128746033,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10772","display_name":"Distributed systems and fault tolerance","score":0.9976999759674072,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.8888589143753052},{"id":"https://openalex.org/keywords/relational-database","display_name":"Relational database","score":0.5939784646034241},{"id":"https://openalex.org/keywords/query-language","display_name":"Query language","score":0.5358160138130188},{"id":"https://openalex.org/keywords/sargable","display_name":"Sargable","score":0.5204311013221741},{"id":"https://openalex.org/keywords/conjunctive-query","display_name":"Conjunctive query","score":0.5194963216781616},{"id":"https://openalex.org/keywords/interface","display_name":"Interface (matter)","score":0.5128281712532043},{"id":"https://openalex.org/keywords/relational-database-management-system","display_name":"Relational database management system","score":0.5047816038131714},{"id":"https://openalex.org/keywords/relational-model","display_name":"Relational model","score":0.485198050737381},{"id":"https://openalex.org/keywords/query-optimization","display_name":"Query optimization","score":0.4651521146297455},{"id":"https://openalex.org/keywords/database","display_name":"Database","score":0.42894574999809265},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.4263293147087097},{"id":"https://openalex.org/keywords/view","display_name":"View","score":0.41305840015411377},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.3774033188819885},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.3357040286064148},{"id":"https://openalex.org/keywords/database-design","display_name":"Database design","score":0.2801222801208496},{"id":"https://openalex.org/keywords/web-search-query","display_name":"Web search query","score":0.19574150443077087}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8888589143753052},{"id":"https://openalex.org/C5655090","wikidata":"https://www.wikidata.org/wiki/Q192588","display_name":"Relational database","level":2,"score":0.5939784646034241},{"id":"https://openalex.org/C192028432","wikidata":"https://www.wikidata.org/wiki/Q845739","display_name":"Query language","level":2,"score":0.5358160138130188},{"id":"https://openalex.org/C192939062","wikidata":"https://www.wikidata.org/wiki/Q104840822","display_name":"Sargable","level":4,"score":0.5204311013221741},{"id":"https://openalex.org/C65647387","wikidata":"https://www.wikidata.org/wiki/Q1781706","display_name":"Conjunctive query","level":3,"score":0.5194963216781616},{"id":"https://openalex.org/C113843644","wikidata":"https://www.wikidata.org/wiki/Q901882","display_name":"Interface (matter)","level":4,"score":0.5128281712532043},{"id":"https://openalex.org/C24394798","wikidata":"https://www.wikidata.org/wiki/Q192588","display_name":"Relational database management system","level":3,"score":0.5047816038131714},{"id":"https://openalex.org/C40207289","wikidata":"https://www.wikidata.org/wiki/Q755662","display_name":"Relational model","level":3,"score":0.485198050737381},{"id":"https://openalex.org/C157692150","wikidata":"https://www.wikidata.org/wiki/Q2919848","display_name":"Query optimization","level":2,"score":0.4651521146297455},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.42894574999809265},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.4263293147087097},{"id":"https://openalex.org/C54239708","wikidata":"https://www.wikidata.org/wiki/Q1329910","display_name":"View","level":3,"score":0.41305840015411377},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.3774033188819885},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.3357040286064148},{"id":"https://openalex.org/C148840519","wikidata":"https://www.wikidata.org/wiki/Q1049878","display_name":"Database design","level":2,"score":0.2801222801208496},{"id":"https://openalex.org/C164120249","wikidata":"https://www.wikidata.org/wiki/Q995982","display_name":"Web search query","level":3,"score":0.19574150443077087},{"id":"https://openalex.org/C157915830","wikidata":"https://www.wikidata.org/wiki/Q2928001","display_name":"Bubble","level":2,"score":0.0},{"id":"https://openalex.org/C129307140","wikidata":"https://www.wikidata.org/wiki/Q6795880","display_name":"Maximum bubble pressure method","level":3,"score":0.0},{"id":"https://openalex.org/C97854310","wikidata":"https://www.wikidata.org/wiki/Q19541","display_name":"Search engine","level":2,"score":0.0},{"id":"https://openalex.org/C173608175","wikidata":"https://www.wikidata.org/wiki/Q232661","display_name":"Parallel computing","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/0169-023x(93)90006-b","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0169-023x(93)90006-b","pdf_url":null,"source":{"id":"https://openalex.org/S136993123","display_name":"Data & Knowledge Engineering","issn_l":"0169-023X","issn":["0169-023X","1872-6933"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Data &amp; Knowledge Engineering","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":57,"referenced_works":["https://openalex.org/W5293904","https://openalex.org/W75051367","https://openalex.org/W159856841","https://openalex.org/W180578187","https://openalex.org/W205710397","https://openalex.org/W1960424422","https://openalex.org/W1964825546","https://openalex.org/W1967580916","https://openalex.org/W1970495662","https://openalex.org/W1974271982","https://openalex.org/W1977805686","https://openalex.org/W1979016744","https://openalex.org/W1983428002","https://openalex.org/W1988663974","https://openalex.org/W1993132652","https://openalex.org/W1995662679","https://openalex.org/W1998728110","https://openalex.org/W2003112415","https://openalex.org/W2008515767","https://openalex.org/W2014416388","https://openalex.org/W2017251464","https://openalex.org/W2020601345","https://openalex.org/W2027276583","https://openalex.org/W2027750453","https://openalex.org/W2034409909","https://openalex.org/W2043934800","https://openalex.org/W2046589398","https://openalex.org/W2052880614","https://openalex.org/W2055502643","https://openalex.org/W2066954445","https://openalex.org/W2071047814","https://openalex.org/W2078625208","https://openalex.org/W2079399699","https://openalex.org/W2083466563","https://openalex.org/W2084456349","https://openalex.org/W2085520093","https://openalex.org/W2089026751","https://openalex.org/W2091496550","https://openalex.org/W2112404940","https://openalex.org/W2115822498","https://openalex.org/W2122081499","https://openalex.org/W2126550659","https://openalex.org/W2137157258","https://openalex.org/W2140136514","https://openalex.org/W2146899290","https://openalex.org/W2147869465","https://openalex.org/W2155789942","https://openalex.org/W2162621793","https://openalex.org/W2167679350","https://openalex.org/W2172205144","https://openalex.org/W2318940639","https://openalex.org/W6630913162","https://openalex.org/W6647439272","https://openalex.org/W6648690799","https://openalex.org/W6667345371","https://openalex.org/W6670617513","https://openalex.org/W6685011768"],"related_works":["https://openalex.org/W2349238422","https://openalex.org/W2889903446","https://openalex.org/W1855322793","https://openalex.org/W2379847823","https://openalex.org/W2371929047","https://openalex.org/W2150741898","https://openalex.org/W2554271401","https://openalex.org/W3085968255","https://openalex.org/W4385595118","https://openalex.org/W2226699823"],"abstract_inverted_index":null,"counts_by_year":[{"year":2012,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
