{"id":"https://openalex.org/W4255513984","doi":"https://doi.org/10.1007/3-540-07141-5_254","title":"A query language for a relational data base","display_name":"A query language for a relational data base","publication_year":1975,"publication_date":"1975-01-01","ids":{"openalex":"https://openalex.org/W4255513984","doi":"https://doi.org/10.1007/3-540-07141-5_254"},"language":"en","primary_location":{"id":"doi:10.1007/3-540-07141-5_254","is_oa":false,"landing_page_url":"https://doi.org/10.1007/3-540-07141-5_254","pdf_url":null,"source":{"id":"https://openalex.org/S106296714","display_name":"Lecture notes in computer science","issn_l":"0302-9743","issn":["0302-9743","1611-3349"],"is_oa":false,"is_in_doaj":false,"is_core":true,"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":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Lecture Notes in Computer Science","raw_type":"book-chapter"},"type":"conference-paper","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/A5017816839","display_name":"A. Pirotte","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"A. Pirotte","raw_affiliation_strings":["MBLE Research Laboratory, 2 av. Van Becelaere, 1170, Brussels, Belgium"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"MBLE Research Laboratory, 2 av. Van Becelaere, 1170, Brussels, Belgium","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5059954610","display_name":"P. Wodon","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"P. Wodon","raw_affiliation_strings":["MBLE Research Laboratory, 2 av. Van Becelaere, 1170, Brussels, Belgium"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"MBLE Research Laboratory, 2 av. Van Becelaere, 1170, Brussels, Belgium","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":5000,"currency":"EUR","value_usd":5392},"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.48275862,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"524","last_page":"531"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10317","display_name":"Advanced Database Systems and Queries","score":0.9997000098228455,"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":0.9997000098228455,"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/T10215","display_name":"Semantic Web and Ontologies","score":0.9994999766349792,"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/T11106","display_name":"Data Management and Algorithms","score":0.9975000023841858,"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/computer-science","display_name":"Computer science","score":0.9057691097259521},{"id":"https://openalex.org/keywords/query-language","display_name":"Query language","score":0.7609091997146606},{"id":"https://openalex.org/keywords/rdf-query-language","display_name":"RDF query language","score":0.6475390195846558},{"id":"https://openalex.org/keywords/relational-database","display_name":"Relational database","score":0.5881457328796387},{"id":"https://openalex.org/keywords/base","display_name":"Base (topology)","score":0.5670682191848755},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.456575870513916},{"id":"https://openalex.org/keywords/query-optimization","display_name":"Query optimization","score":0.455181360244751},{"id":"https://openalex.org/keywords/logical-data-model","display_name":"Logical data model","score":0.43996092677116394},{"id":"https://openalex.org/keywords/data-control-language","display_name":"Data control language","score":0.4298841655254364},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.4130447208881378},{"id":"https://openalex.org/keywords/query-by-example","display_name":"Query by Example","score":0.3690887689590454},{"id":"https://openalex.org/keywords/natural-language-processing","display_name":"Natural language processing","score":0.34048736095428467},{"id":"https://openalex.org/keywords/database","display_name":"Database","score":0.3319751024246216},{"id":"https://openalex.org/keywords/data-modeling","display_name":"Data modeling","score":0.2510795295238495},{"id":"https://openalex.org/keywords/web-search-query","display_name":"Web search query","score":0.24272727966308594},{"id":"https://openalex.org/keywords/web-query-classification","display_name":"Web query classification","score":0.22146198153495789},{"id":"https://openalex.org/keywords/search-engine","display_name":"Search engine","score":0.08849707245826721}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.9057691097259521},{"id":"https://openalex.org/C192028432","wikidata":"https://www.wikidata.org/wiki/Q845739","display_name":"Query language","level":2,"score":0.7609091997146606},{"id":"https://openalex.org/C96956885","wikidata":"https://www.wikidata.org/wiki/Q6138701","display_name":"RDF query language","level":5,"score":0.6475390195846558},{"id":"https://openalex.org/C5655090","wikidata":"https://www.wikidata.org/wiki/Q192588","display_name":"Relational database","level":2,"score":0.5881457328796387},{"id":"https://openalex.org/C42058472","wikidata":"https://www.wikidata.org/wiki/Q810214","display_name":"Base (topology)","level":2,"score":0.5670682191848755},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.456575870513916},{"id":"https://openalex.org/C157692150","wikidata":"https://www.wikidata.org/wiki/Q2919848","display_name":"Query optimization","level":2,"score":0.455181360244751},{"id":"https://openalex.org/C203702819","wikidata":"https://www.wikidata.org/wiki/Q17146953","display_name":"Logical data model","level":3,"score":0.43996092677116394},{"id":"https://openalex.org/C32977378","wikidata":"https://www.wikidata.org/wiki/Q604737","display_name":"Data control language","level":5,"score":0.4298841655254364},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.4130447208881378},{"id":"https://openalex.org/C194222762","wikidata":"https://www.wikidata.org/wiki/Q114486","display_name":"Query by Example","level":4,"score":0.3690887689590454},{"id":"https://openalex.org/C204321447","wikidata":"https://www.wikidata.org/wiki/Q30642","display_name":"Natural language processing","level":1,"score":0.34048736095428467},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.3319751024246216},{"id":"https://openalex.org/C67186912","wikidata":"https://www.wikidata.org/wiki/Q367664","display_name":"Data modeling","level":2,"score":0.2510795295238495},{"id":"https://openalex.org/C164120249","wikidata":"https://www.wikidata.org/wiki/Q995982","display_name":"Web search query","level":3,"score":0.24272727966308594},{"id":"https://openalex.org/C118689300","wikidata":"https://www.wikidata.org/wiki/Q7978614","display_name":"Web query classification","level":4,"score":0.22146198153495789},{"id":"https://openalex.org/C97854310","wikidata":"https://www.wikidata.org/wiki/Q19541","display_name":"Search engine","level":2,"score":0.08849707245826721},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/3-540-07141-5_254","is_oa":false,"landing_page_url":"https://doi.org/10.1007/3-540-07141-5_254","pdf_url":null,"source":{"id":"https://openalex.org/S106296714","display_name":"Lecture notes in computer science","issn_l":"0302-9743","issn":["0302-9743","1611-3349"],"is_oa":false,"is_in_doaj":false,"is_core":true,"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":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Lecture Notes in Computer Science","raw_type":"book-chapter"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":4,"referenced_works":["https://openalex.org/W2043571746","https://openalex.org/W2047499522","https://openalex.org/W2116215178","https://openalex.org/W2185907055"],"related_works":["https://openalex.org/W1548279772","https://openalex.org/W2400419823","https://openalex.org/W1489445454","https://openalex.org/W3081572596","https://openalex.org/W1585732288","https://openalex.org/W2036832324","https://openalex.org/W2176771627","https://openalex.org/W4240833292","https://openalex.org/W4250894256","https://openalex.org/W644450836"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2025-10-10T00:00:00"}