{"id":"https://openalex.org/W2015455166","doi":"https://doi.org/10.1016/0169-023x(91)90005-i","title":"An object-oriented data model formalised through hypergraphs","display_name":"An object-oriented data model formalised through hypergraphs","publication_year":1991,"publication_date":"1991-05-01","ids":{"openalex":"https://openalex.org/W2015455166","doi":"https://doi.org/10.1016/0169-023x(91)90005-i","mag":"2015455166"},"language":"en","primary_location":{"id":"doi:10.1016/0169-023x(91)90005-i","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0169-023x(91)90005-i","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/A5015725705","display_name":"Mark Levene","orcid":"https://orcid.org/0000-0001-8632-4732"},"institutions":[{"id":"https://openalex.org/I45129253","display_name":"University College London","ror":"https://ror.org/02jx3x895","country_code":"GB","type":"education","lineage":["https://openalex.org/I124357947","https://openalex.org/I45129253"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"M. Levene","raw_affiliation_strings":["Department of Computer Science, University College London, Gower Street, London WC1E 6BT, WC1E 7HX, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Computer Science, University College London, Gower Street, London WC1E 6BT, WC1E 7HX, UK","institution_ids":["https://openalex.org/I45129253"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5051400056","display_name":"Alexandra Poulovassilis","orcid":"https://orcid.org/0000-0001-8981-4104"},"institutions":[{"id":"https://openalex.org/I45129253","display_name":"University College London","ror":"https://ror.org/02jx3x895","country_code":"GB","type":"education","lineage":["https://openalex.org/I124357947","https://openalex.org/I45129253"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"A. Poulovassilis","raw_affiliation_strings":["Department of Computer Science, University College London, Gower Street, London WC1E 6BT, WC1E 7HX, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Computer Science, University College London, Gower Street, London WC1E 6BT, WC1E 7HX, UK","institution_ids":["https://openalex.org/I45129253"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":2590,"currency":"USD","value_usd":2590},"apc_paid":null,"fwci":1.9129,"has_fulltext":false,"cited_by_count":52,"citation_normalized_percentile":{"value":0.86677116,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":"6","issue":"3","first_page":"205","last_page":"224"},"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":0.9977999925613403,"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":0.996399998664856,"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":0.5754708051681519},{"id":"https://openalex.org/keywords/object","display_name":"Object (grammar)","score":0.5639885067939758},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.3540445566177368},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.31877401471138}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5754708051681519},{"id":"https://openalex.org/C2781238097","wikidata":"https://www.wikidata.org/wiki/Q175026","display_name":"Object (grammar)","level":2,"score":0.5639885067939758},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.3540445566177368},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.31877401471138}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/0169-023x(91)90005-i","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0169-023x(91)90005-i","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":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":41,"referenced_works":["https://openalex.org/W82072683","https://openalex.org/W180578187","https://openalex.org/W1504300023","https://openalex.org/W1541178746","https://openalex.org/W1592287058","https://openalex.org/W1968945891","https://openalex.org/W1969375478","https://openalex.org/W1974100509","https://openalex.org/W1999978255","https://openalex.org/W2003453587","https://openalex.org/W2012644520","https://openalex.org/W2026735162","https://openalex.org/W2060849841","https://openalex.org/W2061936891","https://openalex.org/W2072838038","https://openalex.org/W2089781037","https://openalex.org/W2115822498","https://openalex.org/W2117147200","https://openalex.org/W2117847584","https://openalex.org/W2122534492","https://openalex.org/W2137157258","https://openalex.org/W2147869465","https://openalex.org/W2162022442","https://openalex.org/W2162621793","https://openalex.org/W2163832616","https://openalex.org/W2165467455","https://openalex.org/W2173184982","https://openalex.org/W2185907055","https://openalex.org/W2295562782","https://openalex.org/W2489748212","https://openalex.org/W2504366063","https://openalex.org/W2587041094","https://openalex.org/W6630913162","https://openalex.org/W6632526795","https://openalex.org/W6650934827","https://openalex.org/W6677773783","https://openalex.org/W6683877965","https://openalex.org/W6683970438","https://openalex.org/W6697094664","https://openalex.org/W6733212091","https://openalex.org/W7070280639"],"related_works":["https://openalex.org/W4243252198","https://openalex.org/W2135396778","https://openalex.org/W2109507516","https://openalex.org/W1527862632","https://openalex.org/W2118300983","https://openalex.org/W2112962394","https://openalex.org/W3137189469","https://openalex.org/W2740990710","https://openalex.org/W4235530921","https://openalex.org/W2382501300"],"abstract_inverted_index":null,"counts_by_year":[{"year":2022,"cited_by_count":3},{"year":2021,"cited_by_count":1},{"year":2020,"cited_by_count":3},{"year":2019,"cited_by_count":4},{"year":2018,"cited_by_count":5},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":2},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":4}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}
