{"id":"https://openalex.org/W1581284893","doi":"https://doi.org/10.1007/3-540-51251-9_14","title":"A strategy for executing complex queries","display_name":"A strategy for executing complex queries","publication_year":1989,"publication_date":"1989-01-01","ids":{"openalex":"https://openalex.org/W1581284893","doi":"https://doi.org/10.1007/3-540-51251-9_14","mag":"1581284893"},"language":"en","primary_location":{"id":"doi:10.1007/3-540-51251-9_14","is_oa":false,"landing_page_url":"https://doi.org/10.1007/3-540-51251-9_14","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":"book-chapter","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/A5013519924","display_name":"Elisabetta Grazzini","orcid":null},"institutions":[{"id":"https://openalex.org/I45084792","display_name":"University of Florence","ror":"https://ror.org/04jr1s763","country_code":"IT","type":"education","lineage":["https://openalex.org/I45084792"]}],"countries":["IT"],"is_corresponding":true,"raw_author_name":"Elisabetta Grazzini","raw_affiliation_strings":["Dipartimento di Sistemi e Informatica, Universit\u00e0 di Firenze, Via S. Marta 3, I-50139, Firenze, Italy","\u2019Universit\u00e0 di Firenze"],"affiliations":[{"raw_affiliation_string":"Dipartimento di Sistemi e Informatica, Universit\u00e0 di Firenze, Via S. Marta 3, I-50139, Firenze, Italy","institution_ids":["https://openalex.org/I45084792"]},{"raw_affiliation_string":"\u2019Universit\u00e0 di Firenze","institution_ids":["https://openalex.org/I45084792"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5059221651","display_name":"Fabio Pippolini","orcid":null},"institutions":[{"id":"https://openalex.org/I4210137033","display_name":"Istituto di Matematica Applicata e Tecnologie Informatiche","ror":"https://ror.org/03m0n3c07","country_code":"IT","type":"education","lineage":["https://openalex.org/I4210137033","https://openalex.org/I4210155236"]},{"id":"https://openalex.org/I4210144062","display_name":"Consorzio Roma Ricerche","ror":"https://ror.org/03jvpn714","country_code":"IT","type":"nonprofit","lineage":["https://openalex.org/I4210144062"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"Fabio Pippolini","raw_affiliation_strings":["Istituto per le Applicazioni della Matematica e dell'Informatica, Consiglio Nazionale delle Ricerche, Viale Morgagni 67/a, I-50134, Firenze, Italy","Consiglio Nazionale delle Ricerche"],"affiliations":[{"raw_affiliation_string":"Istituto per le Applicazioni della Matematica e dell'Informatica, Consiglio Nazionale delle Ricerche, Viale Morgagni 67/a, I-50134, Firenze, Italy","institution_ids":["https://openalex.org/I4210137033"]},{"raw_affiliation_string":"Consiglio Nazionale delle Ricerche","institution_ids":["https://openalex.org/I4210144062"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5013519924"],"corresponding_institution_ids":["https://openalex.org/I45084792"],"apc_list":{"value":5000,"currency":"EUR","value_usd":5392},"apc_paid":null,"fwci":0.8853,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.72991288,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"207","last_page":"221"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10317","display_name":"Advanced Database Systems and Queries","score":0.9998999834060669,"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":0.9998999834060669,"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":0.9995999932289124,"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/T10215","display_name":"Semantic Web and Ontologies","score":0.9939000010490417,"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/tuple","display_name":"Tuple","score":0.8473081588745117},{"id":"https://openalex.org/keywords/operand","display_name":"Operand","score":0.8290579319000244},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7968745827674866},{"id":"https://openalex.org/keywords/join","display_name":"Join (topology)","score":0.7763700485229492},{"id":"https://openalex.org/keywords/relation","display_name":"Relation (database)","score":0.5570663213729858},{"id":"https://openalex.org/keywords/relational-database","display_name":"Relational database","score":0.542431116104126},{"id":"https://openalex.org/keywords/class","display_name":"Class (philosophy)","score":0.5406342148780823},{"id":"https://openalex.org/keywords/relational-algebra","display_name":"Relational algebra","score":0.5156875848770142},{"id":"https://openalex.org/keywords/index","display_name":"Index (typography)","score":0.5016496181488037},{"id":"https://openalex.org/keywords/representation","display_name":"Representation (politics)","score":0.47466519474983215},{"id":"https://openalex.org/keywords/conjunctive-query","display_name":"Conjunctive query","score":0.4684842824935913},{"id":"https://openalex.org/keywords/cartesian-product","display_name":"Cartesian product","score":0.4556236267089844},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.44990286231040955},{"id":"https://openalex.org/keywords/query-optimization","display_name":"Query optimization","score":0.41467756032943726},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.3370867669582367},{"id":"https://openalex.org/keywords/database","display_name":"Database","score":0.3094788193702698},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.1432228982448578},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.11524921655654907},{"id":"https://openalex.org/keywords/operating-system","display_name":"Operating system","score":0.08534139394760132},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.08160832524299622}],"concepts":[{"id":"https://openalex.org/C118930307","wikidata":"https://www.wikidata.org/wiki/Q600590","display_name":"Tuple","level":2,"score":0.8473081588745117},{"id":"https://openalex.org/C55526617","wikidata":"https://www.wikidata.org/wiki/Q719375","display_name":"Operand","level":2,"score":0.8290579319000244},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7968745827674866},{"id":"https://openalex.org/C2776124973","wikidata":"https://www.wikidata.org/wiki/Q3183033","display_name":"Join (topology)","level":2,"score":0.7763700485229492},{"id":"https://openalex.org/C25343380","wikidata":"https://www.wikidata.org/wiki/Q277521","display_name":"Relation (database)","level":2,"score":0.5570663213729858},{"id":"https://openalex.org/C5655090","wikidata":"https://www.wikidata.org/wiki/Q192588","display_name":"Relational database","level":2,"score":0.542431116104126},{"id":"https://openalex.org/C2777212361","wikidata":"https://www.wikidata.org/wiki/Q5127848","display_name":"Class (philosophy)","level":2,"score":0.5406342148780823},{"id":"https://openalex.org/C95916125","wikidata":"https://www.wikidata.org/wiki/Q840540","display_name":"Relational algebra","level":3,"score":0.5156875848770142},{"id":"https://openalex.org/C2777382242","wikidata":"https://www.wikidata.org/wiki/Q6017816","display_name":"Index (typography)","level":2,"score":0.5016496181488037},{"id":"https://openalex.org/C2776359362","wikidata":"https://www.wikidata.org/wiki/Q2145286","display_name":"Representation (politics)","level":3,"score":0.47466519474983215},{"id":"https://openalex.org/C65647387","wikidata":"https://www.wikidata.org/wiki/Q1781706","display_name":"Conjunctive query","level":3,"score":0.4684842824935913},{"id":"https://openalex.org/C65236422","wikidata":"https://www.wikidata.org/wiki/Q173740","display_name":"Cartesian product","level":2,"score":0.4556236267089844},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.44990286231040955},{"id":"https://openalex.org/C157692150","wikidata":"https://www.wikidata.org/wiki/Q2919848","display_name":"Query optimization","level":2,"score":0.41467756032943726},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.3370867669582367},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.3094788193702698},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.1432228982448578},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.11524921655654907},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.08534139394760132},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.08160832524299622},{"id":"https://openalex.org/C199539241","wikidata":"https://www.wikidata.org/wiki/Q7748","display_name":"Law","level":1,"score":0.0},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.0},{"id":"https://openalex.org/C94625758","wikidata":"https://www.wikidata.org/wiki/Q7163","display_name":"Politics","level":2,"score":0.0},{"id":"https://openalex.org/C17744445","wikidata":"https://www.wikidata.org/wiki/Q36442","display_name":"Political science","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/3-540-51251-9_14","is_oa":false,"landing_page_url":"https://doi.org/10.1007/3-540-51251-9_14","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":[{"score":0.5,"display_name":"Peace, Justice and strong institutions","id":"https://metadata.un.org/sdg/16"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":22,"referenced_works":["https://openalex.org/W17487755","https://openalex.org/W147240463","https://openalex.org/W646340949","https://openalex.org/W1481270797","https://openalex.org/W1484813121","https://openalex.org/W1507469828","https://openalex.org/W1572755666","https://openalex.org/W2055255408","https://openalex.org/W2078915921","https://openalex.org/W2099993385","https://openalex.org/W2111607006","https://openalex.org/W2123209274","https://openalex.org/W2124170481","https://openalex.org/W2149190926","https://openalex.org/W2157979971","https://openalex.org/W2159477038","https://openalex.org/W2169012378","https://openalex.org/W2295596515","https://openalex.org/W3124090670","https://openalex.org/W4244180879","https://openalex.org/W6631345412","https://openalex.org/W6683053635"],"related_works":["https://openalex.org/W2056707262","https://openalex.org/W1505212787","https://openalex.org/W2491916433","https://openalex.org/W4226251578","https://openalex.org/W2127795772","https://openalex.org/W3047081115","https://openalex.org/W2949144621","https://openalex.org/W3107700780","https://openalex.org/W3170346938","https://openalex.org/W59158398"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
