{"id":"https://openalex.org/W2162709812","doi":"https://doi.org/10.1145/1989323.1989424","title":"Llama","display_name":"Llama","publication_year":2011,"publication_date":"2011-06-12","ids":{"openalex":"https://openalex.org/W2162709812","doi":"https://doi.org/10.1145/1989323.1989424","mag":"2162709812"},"language":"en","primary_location":{"id":"doi:10.1145/1989323.1989424","is_oa":false,"landing_page_url":"https://doi.org/10.1145/1989323.1989424","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 2011 ACM SIGMOD International Conference on Management of data","raw_type":"proceedings-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/A5011106133","display_name":"Yu-Ting Lin","orcid":"https://orcid.org/0000-0002-8247-3391"},"institutions":[{"id":"https://openalex.org/I165932596","display_name":"National University of Singapore","ror":"https://ror.org/01tgyzw49","country_code":"SG","type":"education","lineage":["https://openalex.org/I165932596"]}],"countries":["SG"],"is_corresponding":true,"raw_author_name":"Yuting Lin","raw_affiliation_strings":["National University of Singapore, Singapore, Singapore"],"affiliations":[{"raw_affiliation_string":"National University of Singapore, Singapore, Singapore","institution_ids":["https://openalex.org/I165932596"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5059945353","display_name":"Divyakant Agrawal","orcid":"https://orcid.org/0000-0002-0215-9539"},"institutions":[{"id":"https://openalex.org/I154570441","display_name":"University of California, Santa Barbara","ror":"https://ror.org/02t274463","country_code":"US","type":"education","lineage":["https://openalex.org/I154570441"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Divyakant Agrawal","raw_affiliation_strings":["University of California, Santa Barbara, Santa Barbara, USA"],"affiliations":[{"raw_affiliation_string":"University of California, Santa Barbara, Santa Barbara, USA","institution_ids":["https://openalex.org/I154570441"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100373367","display_name":"Chun Chen","orcid":"https://orcid.org/0000-0002-6198-7481"},"institutions":[{"id":"https://openalex.org/I76130692","display_name":"Zhejiang University","ror":"https://ror.org/00a2xv884","country_code":"CN","type":"education","lineage":["https://openalex.org/I76130692"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Chun Chen","raw_affiliation_strings":["Zhejiang University, Zhejiang, China"],"affiliations":[{"raw_affiliation_string":"Zhejiang University, Zhejiang, China","institution_ids":["https://openalex.org/I76130692"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5024892041","display_name":"Beng Chin Ooi","orcid":"https://orcid.org/0000-0003-4446-1100"},"institutions":[{"id":"https://openalex.org/I165932596","display_name":"National University of Singapore","ror":"https://ror.org/01tgyzw49","country_code":"SG","type":"education","lineage":["https://openalex.org/I165932596"]}],"countries":["SG"],"is_corresponding":false,"raw_author_name":"Beng Chin Ooi","raw_affiliation_strings":["National University of Singapore, Singapore, Singapore"],"affiliations":[{"raw_affiliation_string":"National University of Singapore, Singapore, Singapore","institution_ids":["https://openalex.org/I165932596"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5064646829","display_name":"Sai Wu","orcid":"https://orcid.org/0000-0002-1866-9197"},"institutions":[{"id":"https://openalex.org/I165932596","display_name":"National University of Singapore","ror":"https://ror.org/01tgyzw49","country_code":"SG","type":"education","lineage":["https://openalex.org/I165932596"]}],"countries":["SG"],"is_corresponding":false,"raw_author_name":"Sai Wu","raw_affiliation_strings":["National University of Singapore, Singapore, Singapore"],"affiliations":[{"raw_affiliation_string":"National University of Singapore, Singapore, Singapore","institution_ids":["https://openalex.org/I165932596"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5011106133"],"corresponding_institution_ids":["https://openalex.org/I165932596"],"apc_list":null,"apc_paid":null,"fwci":43.9064,"has_fulltext":false,"cited_by_count":126,"citation_normalized_percentile":{"value":0.99775427,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":100},"biblio":{"volume":null,"issue":null,"first_page":"961","last_page":"972"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10101","display_name":"Cloud Computing and Resource Management","score":0.9988999962806702,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"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/T10101","display_name":"Cloud Computing and Resource Management","score":0.9988999962806702,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"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/T11181","display_name":"Advanced Data Storage Technologies","score":0.996999979019165,"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/T11478","display_name":"Caching and Content Delivery","score":0.9952999949455261,"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":0.8334921002388},{"id":"https://openalex.org/keywords/scalability","display_name":"Scalability","score":0.7333942651748657},{"id":"https://openalex.org/keywords/data-warehouse","display_name":"Data warehouse","score":0.628774106502533},{"id":"https://openalex.org/keywords/distributed-file-system","display_name":"Distributed File System","score":0.531480073928833},{"id":"https://openalex.org/keywords/database","display_name":"Database","score":0.5033909678459167},{"id":"https://openalex.org/keywords/cluster","display_name":"Cluster (spacecraft)","score":0.4962995648384094},{"id":"https://openalex.org/keywords/dissemination","display_name":"Dissemination","score":0.48104074597358704},{"id":"https://openalex.org/keywords/distributed-database","display_name":"Distributed database","score":0.4421330690383911},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.3835044503211975},{"id":"https://openalex.org/keywords/distributed-computing","display_name":"Distributed computing","score":0.38075852394104004},{"id":"https://openalex.org/keywords/parallel-computing","display_name":"Parallel computing","score":0.34067389369010925},{"id":"https://openalex.org/keywords/operating-system","display_name":"Operating system","score":0.22626933455467224}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8334921002388},{"id":"https://openalex.org/C48044578","wikidata":"https://www.wikidata.org/wiki/Q727490","display_name":"Scalability","level":2,"score":0.7333942651748657},{"id":"https://openalex.org/C135572916","wikidata":"https://www.wikidata.org/wiki/Q193351","display_name":"Data warehouse","level":2,"score":0.628774106502533},{"id":"https://openalex.org/C152043487","wikidata":"https://www.wikidata.org/wiki/Q1229600","display_name":"Distributed File System","level":2,"score":0.531480073928833},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.5033909678459167},{"id":"https://openalex.org/C164866538","wikidata":"https://www.wikidata.org/wiki/Q367351","display_name":"Cluster (spacecraft)","level":2,"score":0.4962995648384094},{"id":"https://openalex.org/C101780184","wikidata":"https://www.wikidata.org/wiki/Q840576","display_name":"Dissemination","level":2,"score":0.48104074597358704},{"id":"https://openalex.org/C70061542","wikidata":"https://www.wikidata.org/wiki/Q989016","display_name":"Distributed database","level":2,"score":0.4421330690383911},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.3835044503211975},{"id":"https://openalex.org/C120314980","wikidata":"https://www.wikidata.org/wiki/Q180634","display_name":"Distributed computing","level":1,"score":0.38075852394104004},{"id":"https://openalex.org/C173608175","wikidata":"https://www.wikidata.org/wiki/Q232661","display_name":"Parallel computing","level":1,"score":0.34067389369010925},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.22626933455467224},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1145/1989323.1989424","is_oa":false,"landing_page_url":"https://doi.org/10.1145/1989323.1989424","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 2011 ACM SIGMOD International Conference on Management of data","raw_type":"proceedings-article"},{"id":"pmh:oai:scholarbank.nus.edu.sg:10635/40553","is_oa":false,"landing_page_url":"http://scholarbank.nus.edu.sg/handle/10635/40553","pdf_url":null,"source":{"id":"https://openalex.org/S7407052290","display_name":"National University of Singapore","issn_l":null,"issn":[],"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Scopus","raw_type":"Conference Paper"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Industry, innovation and infrastructure","score":0.6499999761581421,"id":"https://metadata.un.org/sdg/9"}],"awards":[],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":25,"referenced_works":["https://openalex.org/W162574940","https://openalex.org/W1498439332","https://openalex.org/W1547206386","https://openalex.org/W1582870960","https://openalex.org/W1981420413","https://openalex.org/W2010279913","https://openalex.org/W2021284998","https://openalex.org/W2035543557","https://openalex.org/W2043099794","https://openalex.org/W2074935284","https://openalex.org/W2075620950","https://openalex.org/W2104003087","https://openalex.org/W2123686039","https://openalex.org/W2125520775","https://openalex.org/W2125775320","https://openalex.org/W2130642985","https://openalex.org/W2144839430","https://openalex.org/W2147470852","https://openalex.org/W2157979971","https://openalex.org/W2173213060","https://openalex.org/W2624304035","https://openalex.org/W2912802084","https://openalex.org/W3138367763","https://openalex.org/W6679817081","https://openalex.org/W6758383543"],"related_works":["https://openalex.org/W2374084962","https://openalex.org/W2978405156","https://openalex.org/W1976738710","https://openalex.org/W1574371370","https://openalex.org/W4248517311","https://openalex.org/W2131881665","https://openalex.org/W2314287148","https://openalex.org/W2975929853","https://openalex.org/W2249285054","https://openalex.org/W2233862028"],"abstract_inverted_index":{"To":[0],"achieve":[1],"high":[2],"reliability":[3],"and":[4,42,105,135],"scalability,":[5],"most":[6],"large-scale":[7],"data":[8,27,33,73,111],"warehouse":[9,28,112],"systems":[10],"have":[11],"adopted":[12],"the":[13,21,38,56,59,78,143],"cluster-based":[14,26],"architecture.":[15],"In":[16,46],"this":[17],"paper,":[18],"we":[19],"propose":[20],"design":[22,87],"of":[23,40,62,117],"a":[24,31,66,80,88,99,110],"new":[25,89],"system,":[29],"LLama,":[30],"hybrid":[32],"management":[34],"system":[35,69],"which":[36],"combines":[37],"features":[39],"row-wise":[41,149],"column-wise":[43],"database":[44],"systems.":[45],"Llama,":[47],"columns":[48],"are":[49],"formed":[50],"into":[51],"correlation":[52],"groups":[53],"to":[54,71,92],"provide":[55],"basis":[57],"for":[58],"vertical":[60],"partitioning":[61],"tables.":[63],"Llama":[64,107,129],"employs":[65],"distributed":[67],"file":[68],"(DFS)":[70],"disseminate":[72],"among":[74],"cluster":[75],"nodes.":[76],"Above":[77],"DFS,":[79],"MapReduce-based":[81],"query":[82,137],"engine":[83],"is":[84,121,139],"supported.":[85],"We":[86,97],"join":[90,95],"algorithm":[91],"facilitate":[93],"fast":[94],"processing.":[96],"present":[98],"performance":[100,134,138],"study":[101],"on":[102,115,123,148],"TPC-H":[103],"dataset":[104],"compare":[106],"with":[108],"Hive,":[109],"infrastructure":[113],"built":[114],"top":[116],"Hadoop.":[118],"The":[119,125],"experiment":[120],"conducted":[122],"EC2.":[124],"results":[126],"show":[127],"that":[128],"has":[130],"an":[131],"excellent":[132],"load":[133],"its":[136],"significantly":[140],"better":[141],"than":[142],"traditional":[144],"MapReduce":[145],"framework":[146],"based":[147],"storage.":[150]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":1},{"year":2021,"cited_by_count":1},{"year":2020,"cited_by_count":11},{"year":2019,"cited_by_count":8},{"year":2018,"cited_by_count":8},{"year":2017,"cited_by_count":8},{"year":2016,"cited_by_count":19},{"year":2015,"cited_by_count":12},{"year":2014,"cited_by_count":21},{"year":2013,"cited_by_count":17},{"year":2012,"cited_by_count":18}],"updated_date":"2026-03-20T23:20:44.827607","created_date":"2016-06-24T00:00:00"}