{"id":"https://openalex.org/W1978355153","doi":"https://doi.org/10.1002/scj.4690190406","title":"Optimization of Multiple Queries in Relational Database Systems","display_name":"Optimization of Multiple Queries in Relational Database Systems","publication_year":1988,"publication_date":"1988-01-01","ids":{"openalex":"https://openalex.org/W1978355153","doi":"https://doi.org/10.1002/scj.4690190406","mag":"1978355153"},"language":"en","primary_location":{"id":"doi:10.1002/scj.4690190406","is_oa":false,"landing_page_url":"https://doi.org/10.1002/scj.4690190406","pdf_url":null,"source":{"id":"https://openalex.org/S58208175","display_name":"Systems and Computers in Japan","issn_l":"0882-1666","issn":["0882-1666","1520-684X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Systems and Computers in Japan","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/A5030040541","display_name":"Junichi Miyao","orcid":"https://orcid.org/0000-0001-8545-0630"},"institutions":[{"id":"https://openalex.org/I113306721","display_name":"Hiroshima University","ror":"https://ror.org/03t78wx29","country_code":"JP","type":"education","lineage":["https://openalex.org/I113306721"]},{"id":"https://openalex.org/I1321014770","display_name":"Association for Computing Machinery","ror":"https://ror.org/03wsadn68","country_code":"US","type":"nonprofit","lineage":["https://openalex.org/I1321014770"]},{"id":"https://openalex.org/I4387930200","display_name":"Information Processing Society of Japan","ror":"https://ror.org/02v970d04","country_code":null,"type":"nonprofit","lineage":["https://openalex.org/I4387930200"]}],"countries":["JP","US"],"is_corresponding":false,"raw_author_name":"Jun'ichi Miyao","raw_affiliation_strings":["Faculty of Engineering, Hiroshima University, Higashi-Hiroshima, Japan 724","Jun'ichi Miyao received B.E., M.Sc. and Ph.D. in Circuits and Electrical Systems Engineering from Hiroshima University, Higashi-Hiroshima, Japan, in 1982, 1984 and 1987, respectively. 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