{"id":"https://openalex.org/W1970428406","doi":"https://doi.org/10.1016/0306-4379(78)90003-0","title":"Linguistic approach to database theory: DDL-s for hierarchical model","display_name":"Linguistic approach to database theory: DDL-s for hierarchical model","publication_year":1978,"publication_date":"1978-01-01","ids":{"openalex":"https://openalex.org/W1970428406","doi":"https://doi.org/10.1016/0306-4379(78)90003-0","mag":"1970428406"},"language":"en","primary_location":{"id":"doi:10.1016/0306-4379(78)90003-0","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0306-4379(78)90003-0","pdf_url":null,"source":{"id":"https://openalex.org/S193006928","display_name":"Information Systems","issn_l":"0306-4379","issn":["0306-4379","1873-6076"],"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":"Information Systems","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/A5070992124","display_name":"Kazimierz Subieta","orcid":"https://orcid.org/0000-0002-7282-002X"},"institutions":[{"id":"https://openalex.org/I4210087266","display_name":"Institute of Computer Science","ror":"https://ror.org/003fvp964","country_code":"PL","type":"facility","lineage":["https://openalex.org/I4210087266","https://openalex.org/I99542240"]},{"id":"https://openalex.org/I99542240","display_name":"Polish Academy of Sciences","ror":"https://ror.org/01dr6c206","country_code":"PL","type":"funder","lineage":["https://openalex.org/I99542240"]}],"countries":["PL"],"is_corresponding":true,"raw_author_name":"Kazimierz Subieta","raw_affiliation_strings":["Institute of Computer Science, Polish Academy of Sciences, P.O. Box 22 00-901 Warsaw PKiN, Poland","Institute of Computer Science, Polish Academy of Sciences P.O. Box 22, 00-901 Warsaw, PKin, Poland"],"affiliations":[{"raw_affiliation_string":"Institute of Computer Science, Polish Academy of Sciences, P.O. Box 22 00-901 Warsaw PKiN, Poland","institution_ids":["https://openalex.org/I99542240","https://openalex.org/I4210087266"]},{"raw_affiliation_string":"Institute of Computer Science, Polish Academy of Sciences P.O. Box 22, 00-901 Warsaw, PKin, Poland","institution_ids":["https://openalex.org/I99542240"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5070992124"],"corresponding_institution_ids":["https://openalex.org/I4210087266","https://openalex.org/I99542240"],"apc_list":{"value":2970,"currency":"USD","value_usd":2970},"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":4,"citation_normalized_percentile":{"value":0.07115677,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"3","issue":"3","first_page":"203","last_page":"208"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T13062","display_name":"Cognitive Computing and Networks","score":0.984000027179718,"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/T13062","display_name":"Cognitive Computing and Networks","score":0.984000027179718,"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":0.9811000227928162,"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/T10317","display_name":"Advanced Database Systems and Queries","score":0.9803000092506409,"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":0.8148623108863831},{"id":"https://openalex.org/keywords/string","display_name":"String (physics)","score":0.6201012134552002},{"id":"https://openalex.org/keywords/class","display_name":"Class (philosophy)","score":0.6041598916053772},{"id":"https://openalex.org/keywords/context","display_name":"Context (archaeology)","score":0.554520845413208},{"id":"https://openalex.org/keywords/formal-language","display_name":"Formal language","score":0.5494007468223572},{"id":"https://openalex.org/keywords/regular-expression","display_name":"Regular expression","score":0.5276305079460144},{"id":"https://openalex.org/keywords/set","display_name":"Set (abstract data type)","score":0.5256006717681885},{"id":"https://openalex.org/keywords/natural-language-processing","display_name":"Natural language processing","score":0.5249571800231934},{"id":"https://openalex.org/keywords/rule-based-machine-translation","display_name":"Rule-based machine translation","score":0.5088815689086914},{"id":"https://openalex.org/keywords/automaton","display_name":"Automaton","score":0.48718851804733276},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.45337435603141785},{"id":"https://openalex.org/keywords/grammar","display_name":"Grammar","score":0.4481295645236969},{"id":"https://openalex.org/keywords/regular-language","display_name":"Regular language","score":0.4305427074432373},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.42123258113861084},{"id":"https://openalex.org/keywords/context-free-grammar","display_name":"Context-free grammar","score":0.4173807203769684},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.41633379459381104},{"id":"https://openalex.org/keywords/database-theory","display_name":"Database theory","score":0.4134944975376129},{"id":"https://openalex.org/keywords/database-design","display_name":"Database design","score":0.3964202404022217},{"id":"https://openalex.org/keywords/database","display_name":"Database","score":0.31041771173477173},{"id":"https://openalex.org/keywords/linguistics","display_name":"Linguistics","score":0.30660736560821533},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.1697889268398285}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8148623108863831},{"id":"https://openalex.org/C157486923","wikidata":"https://www.wikidata.org/wiki/Q1376436","display_name":"String (physics)","level":2,"score":0.6201012134552002},{"id":"https://openalex.org/C2777212361","wikidata":"https://www.wikidata.org/wiki/Q5127848","display_name":"Class (philosophy)","level":2,"score":0.6041598916053772},{"id":"https://openalex.org/C2779343474","wikidata":"https://www.wikidata.org/wiki/Q3109175","display_name":"Context (archaeology)","level":2,"score":0.554520845413208},{"id":"https://openalex.org/C146072743","wikidata":"https://www.wikidata.org/wiki/Q192161","display_name":"Formal language","level":2,"score":0.5494007468223572},{"id":"https://openalex.org/C121329065","wikidata":"https://www.wikidata.org/wiki/Q185612","display_name":"Regular expression","level":2,"score":0.5276305079460144},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.5256006717681885},{"id":"https://openalex.org/C204321447","wikidata":"https://www.wikidata.org/wiki/Q30642","display_name":"Natural language processing","level":1,"score":0.5249571800231934},{"id":"https://openalex.org/C53893814","wikidata":"https://www.wikidata.org/wiki/Q7378909","display_name":"Rule-based machine translation","level":2,"score":0.5088815689086914},{"id":"https://openalex.org/C112505250","wikidata":"https://www.wikidata.org/wiki/Q787116","display_name":"Automaton","level":2,"score":0.48718851804733276},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.45337435603141785},{"id":"https://openalex.org/C26022165","wikidata":"https://www.wikidata.org/wiki/Q8091","display_name":"Grammar","level":2,"score":0.4481295645236969},{"id":"https://openalex.org/C52370388","wikidata":"https://www.wikidata.org/wiki/Q752532","display_name":"Regular language","level":3,"score":0.4305427074432373},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.42123258113861084},{"id":"https://openalex.org/C97212296","wikidata":"https://www.wikidata.org/wiki/Q338047","display_name":"Context-free grammar","level":3,"score":0.4173807203769684},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.41633379459381104},{"id":"https://openalex.org/C12439846","wikidata":"https://www.wikidata.org/wiki/Q4809258","display_name":"Database theory","level":3,"score":0.4134944975376129},{"id":"https://openalex.org/C148840519","wikidata":"https://www.wikidata.org/wiki/Q1049878","display_name":"Database design","level":2,"score":0.3964202404022217},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.31041771173477173},{"id":"https://openalex.org/C41895202","wikidata":"https://www.wikidata.org/wiki/Q8162","display_name":"Linguistics","level":1,"score":0.30660736560821533},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.1697889268398285},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.0},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0},{"id":"https://openalex.org/C37914503","wikidata":"https://www.wikidata.org/wiki/Q156495","display_name":"Mathematical physics","level":1,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/0306-4379(78)90003-0","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0306-4379(78)90003-0","pdf_url":null,"source":{"id":"https://openalex.org/S193006928","display_name":"Information Systems","issn_l":"0306-4379","issn":["0306-4379","1873-6076"],"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":"Information Systems","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.7400000095367432,"display_name":"Quality Education","id":"https://metadata.un.org/sdg/4"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":15,"referenced_works":["https://openalex.org/W299519334","https://openalex.org/W1998339949","https://openalex.org/W2012140001","https://openalex.org/W2077207253","https://openalex.org/W2138709157","https://openalex.org/W2145343598","https://openalex.org/W2148224873","https://openalex.org/W2165467455","https://openalex.org/W2185907055","https://openalex.org/W2313469048","https://openalex.org/W2339337913","https://openalex.org/W2911980423","https://openalex.org/W4237180522","https://openalex.org/W6649955345","https://openalex.org/W6659855545"],"related_works":["https://openalex.org/W2964091527","https://openalex.org/W1582705003","https://openalex.org/W2603910788","https://openalex.org/W2105843429","https://openalex.org/W2280368318","https://openalex.org/W2057841333","https://openalex.org/W2998389348","https://openalex.org/W4376863261","https://openalex.org/W2952430269","https://openalex.org/W4297878330"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}