{"id":"https://openalex.org/W2063014766","doi":"https://doi.org/10.1016/0169-023x(90)90019-a","title":"RELOOP, an algebra based query language for an object-oriented database system","display_name":"RELOOP, an algebra based query language for an object-oriented database system","publication_year":1990,"publication_date":"1990-10-01","ids":{"openalex":"https://openalex.org/W2063014766","doi":"https://doi.org/10.1016/0169-023x(90)90019-a","mag":"2063014766"},"language":"en","primary_location":{"id":"doi:10.1016/0169-023x(90)90019-a","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0169-023x(90)90019-a","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/A5087099692","display_name":"Sophie Cluet","orcid":null},"institutions":[{"id":"https://openalex.org/I204730241","display_name":"Universit\u00e9 Paris Cit\u00e9","ror":"https://ror.org/05f82e368","country_code":"FR","type":"education","lineage":["https://openalex.org/I204730241"]}],"countries":["FR"],"is_corresponding":true,"raw_author_name":"Sophie Cluet","raw_affiliation_strings":["Universit\u00e9 Paris Cit\u00e9, Paris, France"],"affiliations":[{"raw_affiliation_string":"Universit\u00e9 Paris Cit\u00e9, Paris, France","institution_ids":["https://openalex.org/I204730241"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5001155310","display_name":"Claude Delobel","orcid":null},"institutions":[{"id":"https://openalex.org/I204730241","display_name":"Universit\u00e9 Paris Cit\u00e9","ror":"https://ror.org/05f82e368","country_code":"FR","type":"education","lineage":["https://openalex.org/I204730241"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"Claude Delobel","raw_affiliation_strings":["Universit\u00e9 Paris Cit\u00e9, Paris, France"],"affiliations":[{"raw_affiliation_string":"Universit\u00e9 Paris Cit\u00e9, Paris, France","institution_ids":["https://openalex.org/I204730241"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5082658683","display_name":"Christophe L\u00e9cluse","orcid":null},"institutions":[{"id":"https://openalex.org/I204730241","display_name":"Universit\u00e9 Paris Cit\u00e9","ror":"https://ror.org/05f82e368","country_code":"FR","type":"education","lineage":["https://openalex.org/I204730241"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"Christophe L\u00e9cluse","raw_affiliation_strings":["Universit\u00e9 Paris Cit\u00e9, Paris, France"],"affiliations":[{"raw_affiliation_string":"Universit\u00e9 Paris Cit\u00e9, Paris, France","institution_ids":["https://openalex.org/I204730241"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5074614459","display_name":"Philippe Richard","orcid":"https://orcid.org/0009-0000-7271-1352"},"institutions":[{"id":"https://openalex.org/I204730241","display_name":"Universit\u00e9 Paris Cit\u00e9","ror":"https://ror.org/05f82e368","country_code":"FR","type":"education","lineage":["https://openalex.org/I204730241"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"Philippe Richard","raw_affiliation_strings":["Universit\u00e9 Paris Cit\u00e9, Paris, France"],"affiliations":[{"raw_affiliation_string":"Universit\u00e9 Paris Cit\u00e9, Paris, France","institution_ids":["https://openalex.org/I204730241"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5087099692"],"corresponding_institution_ids":["https://openalex.org/I204730241"],"apc_list":{"value":2590,"currency":"USD","value_usd":2590},"apc_paid":null,"fwci":10.2943,"has_fulltext":false,"cited_by_count":45,"citation_normalized_percentile":{"value":0.97905818,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"5","issue":"4","first_page":"333","last_page":"352"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10317","display_name":"Advanced Database Systems and Queries","score":0.9998000264167786,"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":0.9998000264167786,"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":0.9970999956130981,"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/T10126","display_name":"Logic, programming, and type systems","score":0.9961000084877014,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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":0.8336387276649475},{"id":"https://openalex.org/keywords/query-language","display_name":"Query language","score":0.8167538642883301},{"id":"https://openalex.org/keywords/object-query-language","display_name":"Object Query Language","score":0.7436457276344299},{"id":"https://openalex.org/keywords/rdf-query-language","display_name":"RDF query language","score":0.6745646595954895},{"id":"https://openalex.org/keywords/query-by-example","display_name":"Query by Example","score":0.6346865892410278},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.6259719133377075},{"id":"https://openalex.org/keywords/query-optimization","display_name":"Query optimization","score":0.6102808713912964},{"id":"https://openalex.org/keywords/sql","display_name":"SQL","score":0.5608897805213928},{"id":"https://openalex.org/keywords/sketch","display_name":"Sketch","score":0.5485393404960632},{"id":"https://openalex.org/keywords/data-control-language","display_name":"Data control language","score":0.5319918394088745},{"id":"https://openalex.org/keywords/view","display_name":"View","score":0.4828413128852844},{"id":"https://openalex.org/keywords/sargable","display_name":"Sargable","score":0.4728151559829712},{"id":"https://openalex.org/keywords/object","display_name":"Object (grammar)","score":0.464969664812088},{"id":"https://openalex.org/keywords/data-definition-language","display_name":"Data definition language","score":0.45956045389175415},{"id":"https://openalex.org/keywords/query-expansion","display_name":"Query expansion","score":0.4492647349834442},{"id":"https://openalex.org/keywords/data-manipulation-language","display_name":"Data manipulation language","score":0.41732528805732727},{"id":"https://openalex.org/keywords/database","display_name":"Database","score":0.39720362424850464},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.3710950016975403},{"id":"https://openalex.org/keywords/web-search-query","display_name":"Web search query","score":0.365034818649292},{"id":"https://openalex.org/keywords/web-query-classification","display_name":"Web query classification","score":0.33020010590553284},{"id":"https://openalex.org/keywords/database-design","display_name":"Database design","score":0.29125189781188965},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.21018105745315552},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.07071056962013245},{"id":"https://openalex.org/keywords/search-engine","display_name":"Search engine","score":0.0646965503692627}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8336387276649475},{"id":"https://openalex.org/C192028432","wikidata":"https://www.wikidata.org/wiki/Q845739","display_name":"Query language","level":2,"score":0.8167538642883301},{"id":"https://openalex.org/C117667704","wikidata":"https://www.wikidata.org/wiki/Q2011708","display_name":"Object Query Language","level":5,"score":0.7436457276344299},{"id":"https://openalex.org/C96956885","wikidata":"https://www.wikidata.org/wiki/Q6138701","display_name":"RDF query language","level":5,"score":0.6745646595954895},{"id":"https://openalex.org/C194222762","wikidata":"https://www.wikidata.org/wiki/Q114486","display_name":"Query by Example","level":4,"score":0.6346865892410278},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.6259719133377075},{"id":"https://openalex.org/C157692150","wikidata":"https://www.wikidata.org/wiki/Q2919848","display_name":"Query optimization","level":2,"score":0.6102808713912964},{"id":"https://openalex.org/C510870499","wikidata":"https://www.wikidata.org/wiki/Q47607","display_name":"SQL","level":2,"score":0.5608897805213928},{"id":"https://openalex.org/C2779231336","wikidata":"https://www.wikidata.org/wiki/Q7534724","display_name":"Sketch","level":2,"score":0.5485393404960632},{"id":"https://openalex.org/C32977378","wikidata":"https://www.wikidata.org/wiki/Q604737","display_name":"Data control language","level":5,"score":0.5319918394088745},{"id":"https://openalex.org/C54239708","wikidata":"https://www.wikidata.org/wiki/Q1329910","display_name":"View","level":3,"score":0.4828413128852844},{"id":"https://openalex.org/C192939062","wikidata":"https://www.wikidata.org/wiki/Q104840822","display_name":"Sargable","level":4,"score":0.4728151559829712},{"id":"https://openalex.org/C2781238097","wikidata":"https://www.wikidata.org/wiki/Q175026","display_name":"Object (grammar)","level":2,"score":0.464969664812088},{"id":"https://openalex.org/C55596503","wikidata":"https://www.wikidata.org/wiki/Q1431648","display_name":"Data definition language","level":3,"score":0.45956045389175415},{"id":"https://openalex.org/C99016210","wikidata":"https://www.wikidata.org/wiki/Q5488129","display_name":"Query expansion","level":2,"score":0.4492647349834442},{"id":"https://openalex.org/C56288433","wikidata":"https://www.wikidata.org/wiki/Q58673","display_name":"Data manipulation language","level":2,"score":0.41732528805732727},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.39720362424850464},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.3710950016975403},{"id":"https://openalex.org/C164120249","wikidata":"https://www.wikidata.org/wiki/Q995982","display_name":"Web search query","level":3,"score":0.365034818649292},{"id":"https://openalex.org/C118689300","wikidata":"https://www.wikidata.org/wiki/Q7978614","display_name":"Web query classification","level":4,"score":0.33020010590553284},{"id":"https://openalex.org/C148840519","wikidata":"https://www.wikidata.org/wiki/Q1049878","display_name":"Database design","level":2,"score":0.29125189781188965},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.21018105745315552},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.07071056962013245},{"id":"https://openalex.org/C97854310","wikidata":"https://www.wikidata.org/wiki/Q19541","display_name":"Search engine","level":2,"score":0.0646965503692627}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/0169-023x(90)90019-a","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0169-023x(90)90019-a","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":[{"id":"https://metadata.un.org/sdg/4","score":0.5699999928474426,"display_name":"Quality Education"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":37,"referenced_works":["https://openalex.org/W103013625","https://openalex.org/W1540464923","https://openalex.org/W1555504763","https://openalex.org/W1590607611","https://openalex.org/W1608052467","https://openalex.org/W1770006921","https://openalex.org/W1968659057","https://openalex.org/W1987682002","https://openalex.org/W1989910224","https://openalex.org/W2003453587","https://openalex.org/W2019156246","https://openalex.org/W2026735162","https://openalex.org/W2035182234","https://openalex.org/W2036862988","https://openalex.org/W2038271811","https://openalex.org/W2051045896","https://openalex.org/W2069126914","https://openalex.org/W2089781037","https://openalex.org/W2132254404","https://openalex.org/W2137157258","https://openalex.org/W2147110361","https://openalex.org/W2158655585","https://openalex.org/W2205031991","https://openalex.org/W2240623679","https://openalex.org/W2304612568","https://openalex.org/W6633176798","https://openalex.org/W6635249113","https://openalex.org/W6636269127","https://openalex.org/W6636318178","https://openalex.org/W6642328260","https://openalex.org/W6650934827","https://openalex.org/W6652120956","https://openalex.org/W6659149857","https://openalex.org/W6663335641","https://openalex.org/W6679828413","https://openalex.org/W6683078632","https://openalex.org/W6688005812"],"related_works":["https://openalex.org/W2064437404","https://openalex.org/W1033191873","https://openalex.org/W2071715230","https://openalex.org/W4387686474","https://openalex.org/W2506414302","https://openalex.org/W1489445454","https://openalex.org/W2382121680","https://openalex.org/W3081572596","https://openalex.org/W3116557709","https://openalex.org/W275517711"],"abstract_inverted_index":null,"counts_by_year":[{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
