{"id":"https://openalex.org/W2000656232","doi":"https://doi.org/10.1007/s00778-009-0165-y","title":"The RDF-3X engine for scalable management of RDF data","display_name":"The RDF-3X engine for scalable management of RDF data","publication_year":2009,"publication_date":"2009-08-31","ids":{"openalex":"https://openalex.org/W2000656232","doi":"https://doi.org/10.1007/s00778-009-0165-y","mag":"2000656232"},"language":"en","primary_location":{"id":"doi:10.1007/s00778-009-0165-y","doi":"https://doi.org/10.1007/s00778-009-0165-y","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s00778-009-0165-y","pdf_url":null,"source":{"id":"https://openalex.org/S78926909","display_name":"The VLDB Journal","issn_l":"0949-877X","issn":["0949-877X","1066-8888"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["ccf-a","cwts-core","dongbi-a","jufo-3","norway-2","poland-140","russia-white-list-1"],"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The VLDB Journal","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"http://hdl.handle.net/11858/00-001M-0000-000F-195A-A","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5101880157","display_name":"Thomas Neumann","orcid":"https://orcid.org/0000-0001-5787-142X","observed_orcids":["https://orcid.org/0000-0001-5787-142X"]},"institutions":[{"id":"https://openalex.org/I4210109712","display_name":"Max Planck Institute for Informatics","ror":"https://ror.org/01w19ak89","country_code":"DE","type":"facility","lineage":["https://openalex.org/I149899117","https://openalex.org/I4210109712"]}],"countries":["DE"],"is_corresponding":true,"raw_author_name":"Thomas Neumann","raw_affiliation_strings":["Max-Planck-Institut f\u00fcr Informatik, Saarbr\u00fccken, Germany","Max-Planck Institut F\u00fcr Informatik, Saarbr\u00fccken, Germany#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Max-Planck-Institut f\u00fcr Informatik, Saarbr\u00fccken, Germany","institution_ids":["https://openalex.org/I4210109712"]},{"raw_affiliation_string":"Max-Planck Institut F\u00fcr Informatik, Saarbr\u00fccken, Germany#TAB#","institution_ids":["https://openalex.org/I4210109712"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5088135366","display_name":"Gerhard Weikum","orcid":"https://orcid.org/0000-0003-4959-6098","observed_orcids":["https://orcid.org/0000-0003-4959-6098"]},"institutions":[{"id":"https://openalex.org/I4210109712","display_name":"Max Planck Institute for Informatics","ror":"https://ror.org/01w19ak89","country_code":"DE","type":"facility","lineage":["https://openalex.org/I149899117","https://openalex.org/I4210109712"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Gerhard Weikum","raw_affiliation_strings":["Max-Planck-Institut f\u00fcr Informatik, Saarbr\u00fccken, Germany","Max-Planck Institut F\u00fcr Informatik, Saarbr\u00fccken, Germany#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Max-Planck-Institut f\u00fcr Informatik, Saarbr\u00fccken, Germany","institution_ids":["https://openalex.org/I4210109712"]},{"raw_affiliation_string":"Max-Planck Institut F\u00fcr Informatik, Saarbr\u00fccken, Germany#TAB#","institution_ids":["https://openalex.org/I4210109712"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5101880157"],"corresponding_institution_ids":["https://openalex.org/I4210109712"],"apc_list":{"value":2990,"currency":"USD","value_usd":2990},"apc_paid":null,"fwci":33.8252,"has_fulltext":false,"cited_by_count":635,"citation_normalized_percentile":{"value":0.99793628,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":99,"max":100},"biblio":{"volume":"19","issue":"1","first_page":"91","last_page":"113"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10215","display_name":"Semantic Web and Ontologies","score":0.8711000084877014,"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"}},"topics":[{"id":"https://openalex.org/T10215","display_name":"Semantic Web and Ontologies","score":0.8711000084877014,"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"}},{"id":"https://openalex.org/T10317","display_name":"Advanced Database Systems and Queries","score":0.09830000251531601,"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":0.005400000140070915,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/rdf-data-management","display_name":"RDF data management","score":0.8019999861717224},{"id":"https://openalex.org/keywords/sparql-query-processing","display_name":"SPARQL query processing","score":0.8209999799728394},{"id":"https://openalex.org/keywords/merge-join","display_name":"merge join","score":0.8410000205039978},{"id":"https://openalex.org/keywords/query-optimizer","display_name":"query optimizer","score":0.6629999876022339},{"id":"https://openalex.org/keywords/join-order-optimization","display_name":"join order optimization","score":0.7120000123977661},{"id":"https://openalex.org/keywords/differential-index","display_name":"differential index","score":0.9200000166893005}],"concepts":[{"id":"https://openalex.org/C41009113","wikidata":"https://www.wikidata.org/wiki/Q54871","display_name":"SPARQL","level":4,"score":0.9260125160217285},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8577802181243896},{"id":"https://openalex.org/C78923513","wikidata":"https://www.wikidata.org/wiki/Q2115","display_name":"RDF/XML","level":5,"score":0.8056726455688477},{"id":"https://openalex.org/C147497476","wikidata":"https://www.wikidata.org/wiki/Q54872","display_name":"RDF","level":3,"score":0.7936677932739258},{"id":"https://openalex.org/C15657843","wikidata":"https://www.wikidata.org/wiki/Q1751819","display_name":"RDF Schema","level":5,"score":0.6678755283355713},{"id":"https://openalex.org/C96956885","wikidata":"https://www.wikidata.org/wiki/Q6138701","display_name":"RDF query language","level":5,"score":0.6636071801185608},{"id":"https://openalex.org/C157595922","wikidata":"https://www.wikidata.org/wiki/Q50745537","display_name":"Cwm","level":5,"score":0.6326617002487183},{"id":"https://openalex.org/C2778692605","wikidata":"https://www.wikidata.org/wiki/Q4041866","display_name":"Joins","level":2,"score":0.5703689455986023},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.5644693970680237},{"id":"https://openalex.org/C29321653","wikidata":"https://www.wikidata.org/wiki/Q2288360","display_name":"Simple Knowledge Organization System","level":5,"score":0.5041118860244751},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.48115694522857666},{"id":"https://openalex.org/C69075417","wikidata":"https://www.wikidata.org/wiki/Q515701","display_name":"Linked data","level":3,"score":0.47940561175346375},{"id":"https://openalex.org/C48044578","wikidata":"https://www.wikidata.org/wiki/Q727490","display_name":"Scalability","level":2,"score":0.4681418538093567},{"id":"https://openalex.org/C190703929","wikidata":"https://www.wikidata.org/wiki/Q1331138","display_name":"Star schema","level":4,"score":0.4227867126464844},{"id":"https://openalex.org/C130590232","wikidata":"https://www.wikidata.org/wiki/Q1671754","display_name":"Inverted index","level":3,"score":0.41108110547065735},{"id":"https://openalex.org/C75165309","wikidata":"https://www.wikidata.org/wiki/Q2258979","display_name":"Search engine indexing","level":2,"score":0.375181645154953},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.3587287962436676},{"id":"https://openalex.org/C2129575","wikidata":"https://www.wikidata.org/wiki/Q54837","display_name":"Semantic Web","level":2,"score":0.27231305837631226},{"id":"https://openalex.org/C164120249","wikidata":"https://www.wikidata.org/wiki/Q995982","display_name":"Web search query","level":3,"score":0.14399081468582153},{"id":"https://openalex.org/C97854310","wikidata":"https://www.wikidata.org/wiki/Q19541","display_name":"Search engine","level":2,"score":0.14274632930755615},{"id":"https://openalex.org/C30775581","wikidata":"https://www.wikidata.org/wiki/Q632285","display_name":"Database schema","level":3,"score":0.1419025957584381},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.13410872220993042},{"id":"https://openalex.org/C118689300","wikidata":"https://www.wikidata.org/wiki/Q7978614","display_name":"Web query classification","level":4,"score":0.12438094615936279},{"id":"https://openalex.org/C148840519","wikidata":"https://www.wikidata.org/wiki/Q1049878","display_name":"Database design","level":2,"score":0.11611038446426392}],"mesh":[],"locations_count":5,"locations":[{"id":"doi:10.1007/s00778-009-0165-y","doi":"https://doi.org/10.1007/s00778-009-0165-y","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s00778-009-0165-y","pdf_url":null,"source":{"id":"https://openalex.org/S78926909","display_name":"The VLDB Journal","issn_l":"0949-877X","issn":["0949-877X","1066-8888"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["ccf-a","cwts-core","dongbi-a","jufo-3","norway-2","poland-140","russia-white-list-1"],"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The VLDB Journal","raw_type":"journal-article"},{"id":"pmh:oai:edoc.mpg.de:520381","doi":null,"is_oa":false,"landing_page_url":"http://edoc.mpg.de/520381","pdf_url":null,"source":{"id":"https://openalex.org/S4406922265","display_name":"Max Planck Institute for Plasma Physics","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Report"},{"id":"pmh:oai:edoc.mpg.de:536408","doi":null,"is_oa":false,"landing_page_url":"http://edoc.mpg.de/536408","pdf_url":null,"source":{"id":"https://openalex.org/S4406922265","display_name":"Max Planck Institute for Plasma Physics","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"The VLDB Journal, v.19, 91-113 (2010)","raw_type":"Article"},{"id":"pmh:oai:pure.mpg.de:item_1323713","doi":null,"is_oa":false,"landing_page_url":"http://hdl.handle.net/11858/00-001M-0000-000F-153F-8","pdf_url":null,"source":{"id":"https://openalex.org/S4306400654","display_name":"MPG.PuRe (Max Planck Society)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I149899117","host_organization_name":"Max Planck Society","host_organization_lineage":["https://openalex.org/I149899117"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"The VLDB Journal","raw_type":"info:eu-repo/semantics/article"},{"id":"pmh:oai:pure.mpg.de:item_1324253","doi":null,"is_oa":true,"landing_page_url":"http://hdl.handle.net/11858/00-001M-0000-000F-195A-A","pdf_url":null,"source":{"id":"https://openalex.org/S4306400654","display_name":"MPG.PuRe (Max Planck Society)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I149899117","host_organization_name":"Max Planck Society","host_organization_lineage":["https://openalex.org/I149899117"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Research Report","raw_type":"info:eu-repo/semantics/report"}],"best_oa_location":{"id":"pmh:oai:pure.mpg.de:item_1324253","doi":null,"is_oa":true,"landing_page_url":"http://hdl.handle.net/11858/00-001M-0000-000F-195A-A","pdf_url":null,"source":{"id":"https://openalex.org/S4306400654","display_name":"MPG.PuRe (Max Planck Society)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I149899117","host_organization_name":"Max Planck Society","host_organization_lineage":["https://openalex.org/I149899117"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Research Report","raw_type":"info:eu-repo/semantics/report"},"sustainable_development_goals":[],"sustainable_development_goals_aurora":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":59,"referenced_works":["https://openalex.org/W29172951","https://openalex.org/W51274325","https://openalex.org/W102708294","https://openalex.org/W153393921","https://openalex.org/W560873185","https://openalex.org/W1495197696","https://openalex.org/W1504439773","https://openalex.org/W1509148583","https://openalex.org/W1513522676","https://openalex.org/W1529638954","https://openalex.org/W1532302849","https://openalex.org/W1539479527","https://openalex.org/W1550571039","https://openalex.org/W1565595968","https://openalex.org/W1574546694","https://openalex.org/W1577769509","https://openalex.org/W1585991258","https://openalex.org/W1589271613","https://openalex.org/W1603054734","https://openalex.org/W1812636409","https://openalex.org/W1937427849","https://openalex.org/W1993819379","https://openalex.org/W2013493775","https://openalex.org/W2017102965","https://openalex.org/W2022166150","https://openalex.org/W2026984353","https://openalex.org/W2029554959","https://openalex.org/W2038807029","https://openalex.org/W2046545050","https://openalex.org/W2068739275","https://openalex.org/W2081912596","https://openalex.org/W2089247435","https://openalex.org/W2102844430","https://openalex.org/W2114544510","https://openalex.org/W2124426664","https://openalex.org/W2127140580","https://openalex.org/W2130527449","https://openalex.org/W2132612426","https://openalex.org/W2134547754","https://openalex.org/W2135577024","https://openalex.org/W2136632987","https://openalex.org/W2138662031","https://openalex.org/W2140613126","https://openalex.org/W2140773766","https://openalex.org/W2141115288","https://openalex.org/W2141520758","https://openalex.org/W2145335345","https://openalex.org/W2146399237","https://openalex.org/W2147722789","https://openalex.org/W2148522916","https://openalex.org/W2148789662","https://openalex.org/W2153329411","https://openalex.org/W2156448604","https://openalex.org/W2158237121","https://openalex.org/W2160845726","https://openalex.org/W2163423487","https://openalex.org/W2171471131","https://openalex.org/W4241634004","https://openalex.org/W4248269670"],"related_works":["https://openalex.org/W2602535883","https://openalex.org/W1495140256","https://openalex.org/W4235766773","https://openalex.org/W1506173319","https://openalex.org/W4242336606","https://openalex.org/W2272132326","https://openalex.org/W2258793439","https://openalex.org/W1989267929","https://openalex.org/W2316359368","https://openalex.org/W2265919028"],"abstract_inverted_index":null,"counts_by_year":[{"year":2026,"cited_by_count":5},{"year":2025,"cited_by_count":12},{"year":2024,"cited_by_count":15},{"year":2023,"cited_by_count":43},{"year":2022,"cited_by_count":24},{"year":2021,"cited_by_count":39},{"year":2020,"cited_by_count":49},{"year":2019,"cited_by_count":33},{"year":2018,"cited_by_count":60},{"year":2017,"cited_by_count":46},{"year":2016,"cited_by_count":54},{"year":2015,"cited_by_count":61},{"year":2014,"cited_by_count":56},{"year":2013,"cited_by_count":44},{"year":2012,"cited_by_count":46}],"updated_date":"2026-10-16T09:59:22.235173","created_date":"2025-10-10T00:00:00"}
