Brynhologres

ProceedingsoftheVLDBEndowmentVolume13,No.
12–August2020EditorsinChief:MagdalenaBalazinskaandXiaofangZhouAssociateEditors:AzzaAbouzied,AmrElAbbadi,PhilBernstein,XinLunaDong,Zi(Helen)Huang,NickKoudas,GeorgiaKoutrika,GuoliangLi,AlexandraMeliou,FelixNaumann,DanOlteanu,M.
Tamerzsu,AdityaParameswaran,AndyPavlo,XiaokuiXiao,JeffreyXuYu,MeihuiZhang,JingrenZhouPublicationEditors:HiroakiShiokawaandSenWangPVLDBVol.
13,No.
12iPVLDB–ProceedingsoftheVLDBEndowmentVolume13,No.
12,August2020.
PVLDBisindexedinScopus(Elsevier)aswellascoveredbythefollowingClarivateAnalyticsservices:ScienceCitationIndexExpanded(alsoknownasSciSearch)JournalCitationReports/ScienceEdition,andCurrentContents/EngineeringComputingandTechnologyAllpaperspublishedinthisissuewillbepresentedatthe46thInternationalConferenceonVeryLargeDataBases,Tokyo,Japan,2020.
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Volume13,Number12,August2020Pagesi–xviand2801-3516ISSN2150-8097Availableat:http://www.
pvldb.
organdhttps://dl.
acm.
org.
PVLDBVol.
13,No.
12iiTABLEOFCONTENTSFrontMatterCopyrightNoticeiTableofContentsiiPVLDBOrganizationandReviewBoard–Vol.
13ixDemonstrationTrackChairsandReviewers–Vol.
13xiiIndustrialTrackChairsandReviewers–Vol.
13xiiiTutorialTrackChairs–Vol.
13xivDemonstrationsDemand-basedSensorDataGatheringwithMulti-QueryOptimization2801JuliusHülsmann,JonasTraub,VolkerMarklCheetahVIS:AVisualAnalyticalSystemforLargeUrbanBusData.
2805WentaoNing,QiandongTang,YiZhao,ChuanYang,XiaofengWang,TengWang,HaotianLiu,ChaozuZhang,ZhiyuanZhou,QiaomuShen,BoTangUNMASQUE:AHiddenSQLQueryExtractor2809KapilKhurana,JayantHaritsaG3:WhenGraphNeuralNetworksMeetParallelGraphProcessingSystemsonGPUs.
2813HusongLiu,ShengliangLu,XinyuChen,BingshengHePiBenchOnline:InteractiveBenchmarkingofPersistentMemoryIndexes2817XiangpengHao,LucasLersch,TianzhengWang,IsmailOukidVisClean:InteractiveCleaningforProgressiveVisualization.
2821YuyuLuo,ChengliangChai,XuediQin,NanTang,GuoliangLiIMO:AToolboxforSimulatingandQuerying"Infected"MovingObjects2825JianqiuXu,HuaLu,ZhifengBaoCOUNTATA:DatasetLabelingUsingPatternCounts.
2829YuvalMoskovitch,H.
JagadishADemonstrationofWillump:AStatistically-AwareEnd-to-endOptimizerforMachineLearning.
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2833InferencePeterKraft,DanielKang,DeepakNarayanan,ShoumikPalkar,PeterBailis,MateiZahariaEase.
ml/snoopyinAction:TowardsAutomaticFeasibilityAnalysisforMachineLearningApplicationDevelopment.
2837CedricRenggli,LukaRimanic,LukaKolar,WentaoWu,CeZhangDeepTrack:MonitoringandExploringSpatio-TemporalData–ACaseofTrackingCOVID-19.
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2841YuyuLuo,WenboLi,TianyuZhao,XiangYu,LixiZhang,GuoliangLi,NanTangDF-Toolkit:InteractingwithLow-LevelDatabaseStorage2845JamesWagner,AlexanderRasin,KarenHeart,TanuMalik,JonathanGrierPVLDBVol.
13,No.
12iiiLikeWaterandOil:WithaProperEmulsifier,QueryCompilationandDataParallelismWillMixWell2849HenningFunke,JensTeubnerSQUARES:ASQLSynthesizerUsingQueryReverseEngineering.
2853PedroOrvalho,MiguelTerra-Neves,MiguelVentura,RubenMartins,VascoManquinhoSuccinctEdge:ASuccinctRDFStoreforEdgeComputing2857WeiqinXu,OlivierCURE,PhilippeCalvezSuDocu:SummarizingDocumentsbyExample2861AnnaFariha,MatteoBrucato,PeterHaas,AlexandraMeliouCONCIERGE:ImprovingConstrainedSearchResultsbyDataMelioration2865IdoGuy,TovaMilo,SlavaNovgorodov,BritYoungmannDemonstratingtheVoice-BasedExplorationofLargeDataSetswithCiceroDB-Zero.
2869ImmanuelTrummerFASTS:ASatisfaction-BoostingBusSchedulingAssistant2873SongsongMo,ZhifengBao,BaihuaZheng,ZhiyongPengVaas:VideoAnalyticsAtScale.
2877FavyenBastani,OscarMoll,SamuelMaddensPaQLTooLs:AStochasticPackageQueryInterfaceforScalableConstrainedOptimization.
2881MatteoBrucato,MiroMannino,AzzaAbouzied,PeterHaas,AlexandraMeliouActiveDeeper:AModel-basedActiveDataEnrichmentSystem.
2885LiangZhao,QingcanLi,PeiWang,JiannanWang,EugeneWuRDFFrames:KnowledgeGraphAccessforMachineLearningTools2889AishaMohamed,GhadeerAbuoda,AbdurrahmanGhanem,ZoiKaoudi,AshrafAboulnagaScalable,ResilientandConfigurablePermissionedBlockchainFabric.
2893SajjadRahnama,SuyashGupta,ThamirQadah,JelleHellings,MohammadSadoghiBIRDS:ProgrammingviewupdatestrategiesinDatalog2897Van-DangTran,HiroyukiKato,ZhenjiangHuApacheIoTDB:Time-seriesdatabaseforInternetofThings.
2901ChenWang,HuangXiangdong,JialinQiao,JianminWang,JiaguangSun,KevinMcGrail,JulianFeinauer,JinruiZhang,PengWang,JinruiZhang,RongKang,TianJiang,LeiRui,JunYuanEvaluatingRidesharingAlgorithmsusingtheJargoReal-TimeStochasticSimulator.
2905JamesPan,GuoliangLi,YongWangBitFun:FastAnswerstoQuerieswithTunableFunctionsinGeospatialArrayDBMS2909RamonAntonioRodrigesZalipynisSPHINX:ASystemforMetapath-basedEntityExplorationinHeterogeneousInformationNetworks2913PVLDBVol.
13,No.
12ivSerafeimChatzopoulos,KostasPatroumpas,AlexandrosZeakis,ThanasisVergoulis,DimitriosSkoutasExplainED:ExplanationsforEDANotebooks.
2917DanielDeutch,AmirGilad,TovaMilo,AmitSomechMuSe:MultipleDeletionSemanticsforDataRepair.
2921AmirGilad,YihaoHu,DanielDeutch,SudeepaRoyTabulainAction:ASamplingMiddlewareforInteractiveGeospatialVisualizationDashboards.
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2925JiaYu,KanchanChowdhury,MohamedSarwatX2R2:aToolforExplainableandExplorativeReidentificationRiskAnalysis2929TomRolandusHagedoorn,RohitKumar,FrancescoBonchiObi-Wan:Ontology-BasedRDFIntegrationofHeterogeneousData2933MaximeBuron,FranoisGoasdoué,IoanaManolescu,Marie-LaureMugnierCrocodileDBinAction:Resource-EfficientQueryExecutionbyExploitingTimeSlackness2937DixinTang,ZechaoShang,AaronElmore,SanjayKrishnan,MichaelFranklinGraphAn:Graph-basedSubsequenceAnomalyDetection2941PaulBoniol,ThemisPalpanas,MohammedMeftah,EmmanuelRemyLMFAO:AnEngineforBatchesofGroup-ByAggregates.
2945MaximilianSchleich,DanOlteanuESTOCADA:TowardsScalablePolystoreSystems2949RanaAlotaibi,BogdanCautis,AlinDeutsch,MoustafaLatrache,IoanaManolescu,YifeiYangDemonstrationofInteractiveRuntimeDebuggingofDistributedDataflowsinTexera2953ZuozhiWang,AvinashKumar,ShengquanNi,ChenLiDeepTRANS:ADeepLearningSystemforPublicBusTravelTimeEstimationusingTrafficForecasting2957LuanTran,MinYoungMun,MatthewLim,JonahYamato,NathanHuh,CyrusShahabiDemonstrationofScroogeDB:GettingMoreBangFortheBuckwithDeterministicApproximationintheCloud.
2961SaehanJo,JialingPei,ImmanuelTrummerScrutinizer:FactCheckingStatisticalClaims2965GeorgiosKaragiannis,MohammedSaeed,PaoloPapotti,ImmanuelTrummerSciLensNewsPlatform:ASystemforReal-TimeEvaluationofNewsArticles2969AngelikaRomanou,PanayiotisSmeros,CarlosCastillo,KarlAbererHDAG-Explorer:ASystemforHierarchicalDAGSummarizationandExploration2973XuliangZhu,XinHuang,JinbinHuang,ByronChoi,JianliangXuOrca-SR:AReal-TimeTrafficEngineeringFrameworkleveragingSimilarityJoins.
2977JeesAugustine,SurajShetiya,AbolfazlAsudeh,SaravananThirumuruganathan,AzadeNazi,NanZhang,GautamDas,DiveshSrivastavaPVLDBVol.
13,No.
12vnKVinAction:AcceleratingKV-StoresonNativeComputationalStoragewithNear-DataProcessing2981TobiasVincon,LukasWeber,ArthurBernhard,AndreasKoch,IliaPetrov,ChristianKnoedler,SergeyHardock,SajjadTamimi,ChristianRieggerDemonstrationofInferringCausalityfromRelationalDatabaseswithCaRL2985MoeKayali,BabakSalimi,DanSuciuSQLforDataScientists:DesigningSQLTutorialsforScalableOnlineTeaching2989UweRoehm,LexiBrent,TimDawborn,BrynJeffriesDebuggingLarge-ScaleDataSciencePipelinesusingDagger.
2993ElKindiRezig,AshritaBrahmaroutu,NesimeTatbul,MouradOuzzani,NanTang,TimothyMattson,SamuelMadden,MichaelStonebrakerI-Rex:AnInteractiveRelationalQueryExplainerforSQL2997ZhengjieMiao,TiangangChen,AlexanderBendeck,KevinDay,SudeepaRoy,JunYangPANDA:Policy-awareLocationPrivacyforEpidemicSurveillance3001YangCao,ShunTakagi,YonghuiXiao,LiXiong,MasatoshiYoshikawaIndustrialandApplicationsPyTorchDistributed:ExperiencesonAcceleratingDataParallelTraining3005ShenLi,YanliZhao,RohanVarma,OmkarSalpekar,PieterNoordhuis,TengLi,AdamPaszke,JeffSmith,BrianVaughan,PritamDamania,SoumithChintalaTowardsMulti-wayJoinAwareOptimizerinSAPHANA3019SungheunWi,Wook-ShinHan,ChuhoChang,KihongKimInvaliDB:ScalablePush-BasedReal-TimeQueriesonTopofPull-BasedDatabases3032WolframWingerath,FelixGessert,NorbertRitterAutomatedGenerationofMaterializedViewsinOracle.
3046RafiAhmed,RandallBello,AndrewWitkowski,PraveenKumarNativeJSONDatatypeSupport:MaturingSQLandNoSQLconvergenceinOracleDatabase.
3059ZhenHuaLiu,BedaHammerschmidt,DouglasMcMahon,HuiChang,YingLu,JoshSpiegel,AlfonsoColungaSosa,srikrishnansuresh,GeetaArora,vikasAroraTiDB:ARaft-basedHTAPDatabase.
3072DongxuHuang,QiLiu,QiuCui,ZhuheFang,XiaoyuMa,FeiXu,LiShen,LiuTang,YuxingZhou,MenglongHuang,WanWei,CongLiu,JianZhang,JianjunLi,XuelianWu,LingyuSong,RuoxiSun,ShuaipengYu,LeiZhao,NicholasCameron,LiquanPei,XinTangAsystemdesignforelasticallyscalingtransactionprocessingenginesinvirtualizedservers3085AngelosChristosAnadiotis,RajaAppuswamy,AnastasiaAilamaki,IlanBronshtein,HillelAvni,DavidDominguez-Sal,ShayGoikhman,EliezerLevyPVLDBVol.
13,No.
12viIndustrialStrengthOLTPUsingMainMemoryandManyCores.
3099HillelAvni,AlisherAliev,OrenAmor,AharonAvitzur,IlanBronshtein,EliGinot,ShayGoikhman,EliezerLevy,IdanLevy,FuyangLu,LiranMishali,YeqinMo,NirPachter,DimaSivov,VinothVeeraraghavan,VladiVexler,LeiWang,PengWangAsymmetric-PartitionReplicationforHighlyScalableDistributedTransactionProcessinginPractice3112JuchangLee,HyejeongLee,SeongyunKo,KyuHwanKim,MihneaANDREI,FriedrichKeller,Wook-ShinHanAGL:AScalableSystemforIndustrial-purposeGraphMachineLearning3125DalongZhang,XinHuang,ziqiliu,JunZhou,ZhiyangHu,XianzhengSong,ZhibangGe,LinWang,ZhiqiangZhang,YuanQiLedgerDB:ACentralizedLedgerDatabaseforUniversalAuditandVerification3138XinyingYang,YuanZhang,ShengWang,BenquanYu,FeifeiLi,YizeLi,WenyuanYanAnalyticDB-V:AHybridAnalyticalEngineTowardsQueryFusionforStructuredandUnstructuredData3152ChuangxianWei,BinWu,ShengWang,RenjieLou,ChaoqunZhan,FeifeiLi,YuanzheCaiOracleAutoML:AFastandPredictiveAutoMLPipeline.
3166AnatolyYakovlev,HesamFathiMoghadam,AliMoharrer,JingxiaoCai,NikanChavoshi,VenkatanathanVaradarajan,SandeepAgrawal,TomasKarnagel,SamIdicula,SanjayJinturkar,NipunAgarwal)Monarch:Google'sPlanet-ScaleIn-MemoryTimeSeriesDatabase.
3181ColinAdams,LuisAlonso,BenjaminAtkin,JohnBanning,SumeerBhola,RickBuskens,MingChen,XiChen,YooChung,QinJia,NickSakharov,GeorgeTalbot,NickTaylor,AdamTartConcurrentUpdatestoPageswithFixed-SizerowsUsingLock-FreeAlgorithms.
3195RaghavendraThallamKodandaramaih,HanumaKodavalla,GirishVenkataramanappaPOLARIS:TheDistributedSQLEngineinAzureSynapse.
3204JosepAguilarSaborit,RaghuRamakrishnanMyRocks:LSM-TreeDatabaseStorageEngineServingFacebook'sSocialGraph3217YoshinoriMatsunobu,SiyingDong,HermanLeeHelios:HyperscaleIndexingfortheCloud&Edge3231RahulPotharaju,TerryKim,WentaoWu,VidipAcharya,SteveSuh,AndrewFogarty,ApoorveDave,SindujaRamanujam,TomasTalius,LevNovik,RaghuRamakrishnanReplicationattheSpeedofChange–aFast,ScalableReplicationSolutionforNearReal-TimeHTAPProcessing3245DennisButterstein,DanielMartin,KnutStolze,FelixBeier,JiaZhong,LingyunWangExploitingDomainKnowledgetoaddressMulti-ClassImbalanceandaHeterogeneousFeatureSpaceinClassificationTasksforManufacturingData.
3258VitaliHirsch,PeterReimann,BernhardMitschangAlibabaHologres:ACloud-NativeServiceforHybridServing/AnalyticalProcessing3272XiaoweiJiang,YuejunHu,YuXiang,GuangranJiang,XiaojunJin,ChenXia,WeihuaJiang,JunYu,HaitaoWang,YuanJiang,JihongMa,LiSu,KaiZengPVLDBVol.
13,No.
12viiDIAMetrics:BenchmarkingQueryEnginesatScale.
3285AnjaGruenheid,ShaleenDeep,KruthiNagaraj,HiroNaito,JeffNaughton,StratisViglasDb2EventStore:APurpose-BuiltIoTDatabaseEngine3299ChristianGarcia-Arellano,AdamStorm,DavidKalmuk,HamdiRoumani,RonaldBarber,YuanyuanTian,RichardSidle,FatmaOzcan,MatthewSpilchen,JoshTiefenbach,DanielZilio,LanPham,KostasRakopoulos,AlexanderCheung,DarrenPepper,ImranSayyid,GidonGershinsky,GalLushi,HamidPiraheshF1Lightning:HTAPasaService.
3313JiachengYang,IanRae,JunXu,JeffShute,ZhanYuan,KelvinLau,QiangZeng,XiZhao,JunMa,ZiyangChen,YuanGao,QilinDong,JunxiongZhou,JeremyWood,GoetzGraefe,JeffNaughton,JohnCieslewiczAutoToken:PredictingPeakParallelismforBigDataAnalyticsatMicrosoft.
3326RathijitSen,AlekhJindal,HirenPatel,ShiQiaoADrop-inMiddlewareforSerializableDBClusteringacrossGeo-distributedSites.
3340EnriqueSaurez,BharathBalasubramanian,RichardSchlichting,BrendanTschaen,ShankaranarayananPuzhavakathNarayanan,ZheHuang,UmakishoreRamachandranImprovingReproducibilityofDataSciencePipelinesthroughTransparentProvenanceCapture.
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3354LukasRupprecht,JamesDavis,ConstantineArnold,YanivGur,DeepavaliBhagwatConversationalBI:AnOntology-DrivenConversationSystemforBusinessIntelligenceApplications3369AbdulQuamar,FatmaOzcan,DorianMiller,RobertMoore,RebeccaNiehus,JeffreyKreulenMagnet:Push-basedShuffleServiceforLarge-scaleDataProcessing.
3382MinShen,YeZhou,ChandniSinghLeveragingOrganizationalResourcestoAdaptModelstoNewDataModalities.
3396SahaanaSuri,AbishekSethi,GirijaNarlikar,NeslihanBulut,RaghuveerChanda,SugatoBasu,PradyumnaNarayana,PeterBailis,ChristopherRe,YemaoZengDeltaLake:High-PerformanceACIDTableStorageoverCloudObjectStores3411MichaelArmbrust,TathagataDas,SameerParanjpye,ReynoldXin,ShixiongZhu,AliGhodsi,BurakYavuz,MukulMurthy,JosephTorres,LiwenSun,PeterBoncz,MostafaMokhtar,HermanvanHovell,AdrianIonescu,AlicjaLuszczak,MichalSwitakowski,TakuyaUeshin,XiaoLi,MichalSzafranski,PieterSenster,MateiZahariaTutorialsRobustQueryProcessing:MissionPossible3425JayantHaritsaDataCollectionandQualityChallengesforDeepLearning.
3429StevenWhang,Jae-GilLeeTableExtractionandUnderstandingforScientificandEnterpriseApplications3433DougBurdick,MarinaDanilevsky,AlexandreEvfimievski,YannisKatsis,NancyX.
R.
WangPVLDBVol.
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12viiiSimilarityQueryProcessingforHigh-DimensionalData3437JianbinQin,WeiWang,ChuanXiao,YingZhangBuildingHighThroughputPermissionedBlockchainFabrics:ChallengesandOpportunities3441SuyashGupta,JelleHellings,SajjadRahnama,MohammadSadoghiFairlyEvaluatingandScoringItemsinaDataSet.
3445AbolfazlAsudeh,H.
JagadishAwardTalks,Keynotes,andPanelSpitz:AVerifiableDatabaseSystem3449MeihuiZhang,ZhongleXie,CongYue,ZiyueZhongDremel:ADecadeofInteractiveSQLAnalysisatWebScale3461SergeyMelnik,AndreyGubarev,JingJingLong,GeoffreyRomer,ShivaShivakumar,MattTolton,TheoVassilakis,HosseinAhmadi,DanDelorey,SlavaMin,MoshaPasumansky,JeffShuteJITworks:decidewhenalldataisknown3473AnastasiaAilamakiResponsibleDataManagement3474JuliaStoyanovich,BillHowe,H.
V.
JagadishOut-of-orderExecutionofDatabaseQueries3489KazuoGoda,YutoHayamizu,HiroyukiYamada,MasaruKitsuregawaTheRelationalDataBorgisLearning3502DanOlteanuWindsfromSeattle:DatabaseResearchDirections.
3516PeterBailis,MagdaBalazinska,XinLunaDong,JulianaFreire,RaghuRamakrishnan,MichaelStonebraker,JosephM.
HellersteinPVLDBVol.
13,No.
12ixPVLDBORGANIZATIONANDREVIEWBOARD-Vol.
13EditorsinChiefofPVLDBMagdalenaBalazinska(UniversityofWashington,USA)XiaofangZhou(UniversityofQueensland,Australia)AssociateEditorsofPVLDBAzzaAbouzied(NewYorkUniversityAbuDhabi,UAE)AmrElAbbadi(UniversityofCalifornia,SantaBarbara,USA)PhilBernstein(MicrosoftResearch,USA)XinLunaDong(Amazon,USA)Zi(Helen)Huang(UniversityofQueensland,Australia)NickKoudas(UniversityofToronto,Canada)GeorgiaKoutrika(AthenaResearchCenter,Greece)GuoliangLi(TsinghuaUniversity,China)AlexandraMeliou(UniversityofMassachusetts,Amherst,USA)FelixNaumann(HassoPlattnerInstitute,UniversityofPotsdam,Germany)DanOlteanu(UniversityofOxford,UnitedKingdom)M.
Tamerzsu(UniversityofWaterloo,Canada)AdityaParameswaran(UniversityofCalifornia,Berkeley,USA)AndyPavlo(CarnegieMellonUniversity,USA)XiaokuiXiao(NationalUniversityofSingapore,Singapore)JeffreyXuYu(TheChineseUniversityofHongKong,China)MeihuiZhang(BeijingInstituteofTechnology,China)JingrenZhou(AlibabaGroup,China)PublicationEditorsHiroakiShiokawa(UniversityofTsukuba,Japan)SenWang(UniversityofQueensland,Australia)PVLDBManagingEditorWolfgangLehner(TUDresden,Germany)PVLDBAdvisoryCommitteeDiveshSrivastava(AT&TLabs-Research,USA)M.
Tamerzsu(UniversityofWaterloo,Canada)JulianaFreire(NewYorkUniversity,USA)XinLunaDong(Amazon,USA)PeterBoncz(CWI,Netherlands)XiaofangZhou(UniversityofQueensland,Australia)MagdalenaBalazinska(UniversityofWashington,USA)LeiChen(HongKongUniversityofScienceandTechnology,China)FatmaOzcan(IBMAlmaden,USA)GrahamCormode(UniversityofWarwick,UnitedKingdom)FelixNaumann(HPI,Germany)PVLDBVol.
13,No.
12xReviewBoardZiawaschAbedjan(TUBerlin,Germany)AshrafAboulnaga(QatarComputingResearchInstitute,Qatar)PelinAngn(MiddleEastTechnicalUniversity,Turkey)ArvindArasu(MicrosoftResearch,USA)JoyArulraj(GeorgiaTech,USA)ManosAthanassoulis(BostonUniversity,USA)ZhifengBao(RMITUniversity,Australia)IlariaBartolini(UniversityofBologna,Italy)LeilaniBattle(UniversityofMaryland,USA)KaustubhBeedkar(TUBerlin,Germany)ArnabBhattacharya(IITKanpur,India)SouravSBhowmick(NanyangTechnologicalUniversity,Singapore)CarstenBinnig(TUDarmstadt,Germany)SpyrosBlanas(TheOhioStateUniversity,USA)MatthiasBoehm(GrazUniversityofTechnology,Austria)AlexanderBhm(SAPSE,Germany)MichaelBhlen(UniversityofZürich,Switzerland)PeterBoncz(CentrumWiskunde&Informatica,Netherlands)AngelaBonifati(Lyon1University,France)PhilippeBonnet(ITUniversityofCopenhagen,Denmark)RenataBorovica-Gajic(UniversityofMelbourne,Australia)HuipingCao(NewMexicoStateUniversity,USA)LeiCao(MIT,USA)LijunChang(TheUniversityofSydney,Australia)SurajitChaudhuri(MicrosoftResearch,USA)LeiChen(HongKongUniversityofScienceandTechnology,China)HongCheng(TheChineseUniversityofHongKong,China)ReynoldCheng(TheUniversityofHongKong,China)FeiChiang(McMasterUniversity,Canada)XuChu(GeorgiaTech,USA)BobbieCochrane(IBM,USA)GaoCong(NanyangTechnologicalUniversity,Singapore)BrianCooper(Google,USA)NatachaCrooks(UniversityofTexasatAustin,USA)AndrewCrotty(BrownUniversity,USA)BinCui(PekingUniversity,China)SudiptoDas(AmazonWebService,USA)AkashDasSarma(Facebook,USA)KhuzaimaDaudjee(UniversityofWaterloo,Canada)NivDayan(HarvardUniversity,USA)DongDeng(RutgersUniversity,USA)BailuDing(MicrosoftResearch,USA)BolinDing(AlibabaGroup,China)JensDittrich(SaarlandUniversity,Germany)HarishDoraiswamy(NewYorkUniversity,USA)EduardC.
Dragut(TempleUniversity,USA)CurtisDyreson(UtahStateUniversity,USA)MohamedY.
Eltabakh(TeradataLabs,USA)JoseM.
Faleiro(MicrosoftResearch,USA)JuFan(RenminUniversityofChina,China)RaulCastroFernandez(TheUniversityofChicago,USA)AvriliaFloratou(MicrosoftResearch,USA)AvigdorGal(Technion,Israel)AlexGalakatos(BrownUniversity,USA)JohannGamper(FreeUniversityofBozen-Bolzano,Italy)JingGao(UniversityatBuffalo,USA)YunjunGao(ZhejiangUniversity,China)TingjianGe(UniversityofMassachusetts,Lowell,USA)FlorisGeerts(UniversityofAntwerp,Belgium)JohannesGehrke(MicrosoftResearch,USA)JonathanGoldstein(MicrosoftResearch,USA)TorstenGrust(UniversityofTübingen,Germany)Wook-ShinHan(POSTECH,SouthKorea)TakahiroHara(OsakaUniversity,Japan)OktieHassanzadeh(IBMResearch,USA)MichaelHay(ColgateUniversity,USA)XiHe(UniversityofWaterloo,Canada)MelanieHerschel(UniversityofStuttgart,Germany)KatjaHose(AalborgUniversity,Denmark)WenHua(TheUniversityofQueensland,Australia)XinHuang(HongKongBaptistUniversity,China)YanHuang(UniversityofNorthTexas,USA)Seung-wonHwang(YonseiUniversity,SouthKorea)ChristopherJermaine(RiceUniversity,USA)RuomingJin(KentStateUniversity,USA)EserKandogan(MegagonLabs,USA)MuratKantarcioglu(UniversityofTexasatDallas,USA)VerenaKantere(UniversityofOttawa,Canada)PinarKaragoz(MiddleEastTechnicalUniversity,Turkey)ManosKarpathiotakis(Facebook,UnitedKingdom)BatyaKenig(UniversityofWashington,USA)OliverKennedy(UniversityatBuffalo,USA)ArijitKhan(NanyangTechnologicalUniversity,Singapore)DanielKifer(PennsylvaniaStateUniversity,USA)HideakiKimura(Oracle,USA)SanjayKrishnan(UniversityofChicago,USA)ArunKumar(UniversityofCalifornia,SanDiego,USA)ChuanLei(IBMResearch-Almaden,USA)ViktorLeis(TechnicalUniversityofMunich,Germany)UlfLeser(Humboldt-UniversittzuBerlin,Germany)ChengkaiLi(TheUniversityofTexasatArlington,USA)FeifeiLi(UniversityofUtah,USA)Rong-HuaLi(BeijingInstituteofTechnology,China)SebastianLink(TheUniversityofAuckland,NewZealand)ChengfeiLiu(SwinburneUniversityofTechnology,Australia)HuaLu(AalborgUniversity,Denmark)JiahengLu(UniversityofHelsinki,Finland)WeiLu(RenminUniversityofChina,China)ShuaiMa(BeihangUniversity,China)NikosMamoulis(UniversityofIoannina,Greece)PVLDBVol.
13,No.
12xiIoanaManolescu(INRIA,France)EssamMansour(ConcordiaUniversity,Canada)RyanMarcus(MIT,USA)SergeyMelnik(Google,USA)MohamedMokbel(QatarComputingResearchInstitute,Qatar)MirellaMouraMoro(UniversidadeFederaldeMinasGerais,Brazil)DavideMottin(AarhusUniversity,Denmark)ParthNagarkar(NewMexicoStateUniversity,USA)FaisalNawab(UniversityofCalifornia,SantaCruz,USA)ThomasNeumann(TechnicalUniversityofMunich,Germany)MilosNikolic(TheUniversityofEdinburgh,UnitedKingdom)BengChinOoi(NationalUniversityofSingapore,Singapore)IsmailOukid(SAPSE,USA)MouradOuzzani(QatarComputingResearchInstitute,Qatar)ThemisPalpanas(ParisDescartesUniversity,France)GeorgePapadakis(UniversityofAthens,Greece)OlgaPapaemmanouil(BrandeisUniversity,USA)ThorstenPapenbrock(HassoPlattnerInstitute,Germany)PaoloPapotti(EURECOM,France)StefanoParaboschi(Universita'degliStudidiBergamo,Italy)YongjooPark(UniversityofMichigan,USA)JigneshM.
Patel(UniversityofWisconsin-Madison,USA)PeterPietzuch(ImperialCollegeLondon,UnitedKingdom)HolgerPirk(ImperialCollegeLondon,UnitedKingdom)FábioPorto(NationalLaboratoryforScientificComputing(LNCC),Brazil)DanR.
K.
Ports(MicrosoftResearch,USA)LuQin(UniversityofTechnologySydney,Australia)AbdulH.
Quamar(IBMResearch–Almaden,USA)TilmannRabl(TUBerlin,Germany)KarthikRamachandra(MicrosoftResearch,USA)MayaRamanath(IITDelhi,India)BertholdReinwald(IBMResearch,USA)TheodorosRekatsinas(UniversityofWisconsin-Madison,USA)UweRoehm(TheUniversityofSydney,Australia)JennieRogers(NorthwesternUniversity,USA)FlorinRusu(UniversityofCalifornia,Merced,USA)DiptikalyanSaha(IBMResearchAIIndia,India)KenSalem(UniversityofWaterloo,Canada)SemihSalihoglu(UniversityofWaterloo,Canada)MariaLuisaSapino(UniversityofTorino,Italy)A.
ErdemSariyuce(UniversityatBuffalo,USA)MohamedSarwat(ArizonaStateUniversity,USA)MaximilianSchleich(UniversityofOxford,UnitedKingdom)MohamedSharaf(UniversityofQueensland,Australia)YanyanShen(ShanghaiJiaoTongUniversity,China)KyuseokShim(SeoulNationalUniversity,SouthKorea)PrashantShiralkar(Amazon,USA)AlkisSimitsis(HewlettPackardEnterprise,USA)KostasStefanidis(TampereUniversity,Finland)RebeccaTaft(CockroachLabs,USA)NanTang(QatarComputingResearchInstitute,Qatar)YufeiTao(TheChineseUniversityofHongKong,China)JensTeubner(TUDortmund,Germany)AndreasThor(UniversityofAppliedSciencesforTelecommunicationsLeipzig,Germany)YongxinTong(BeihangUniversity,China)AnthonyK.
H.
Tung(NationalUniversityofSingapore,Singapore)YannisVelegrakis(UtrechtUniversity,Netherlands)StratisViglas(UniversityofEdinburgh,UnitedKingdom)DaisyZheWang(UniversityofFlorida,USA)GuorenWang(BeijingInstituteofTechnology,China)JiannanWang(SimonFraserUniversity,USA)JunhuWang(GriffithUniversity,Australia)SiboWang(TheChineseUniversityofHongKong,China)EugeneWu(ColumbiaUniversity,USA)YingjunWu(AmazonWebService,USA)YinglongXia(HuaweiResearchAmerica,USA)ChuanXiao(OsakaUniversity,Japan)YanghuaXiao(FudanUniversity,China)LiXiong(EmoryUniversity,USA)JianliangXu(HongKongBaptistUniversity,China)XiaochunYang(NortheasternUniversity,China)JunjieYao(EastChinaNormalUniversity,China)HongzhiYin(TheUniversityofQueensland,Australia)ManLungYiu(HongKongPolytechnicUniversity,China)HaruoYokota(TokyoInstituteofTechnology,Japan)MasatoshiYoshikawa(KyotoUniversity,Japan)XiangyaoYu(UniversityofWisconsin-Madison,USA)DemetriosZeinalipour-Yazti(UniversityofCyprus,Cyprus)BaihuaZheng(SingaporeManagementUniversity,Singapore)RuiZhang(UniversityofMelbourne,Australia)WenjieZhang(UniversityofNewSouthWales,Australia)XiaofeiZhang(TheUniversityofMemphis,USA)YingZhang(UniversityofTechnologySydney,Australia)YuanyuanZhu(WuhanUniversity,China)LeiZou(PekingUniversity,China)KostasZoumpatianos(HarvardUniversity,USA)PVLDBVol.
13,No.
12xiiDEMOSTRATIONTRACKCHAIRSANDREVIEWERS-Vol.
13DemonstrationTrackPCChairsYasuhiroFujiwara(NTTCommunicationScienceLaboratories,Japan)IoanaManolescu(InriaandEcolePolytechnique,France)YingZhang(TheUniversityofTechnologySydney,Australia)DemonstrationTrackReviewersAhmedEldawy(UniversityofCaliforniaRiverside,USA)AlekhJindal(Microsoft,USA)AlvinCheung(UniversityofCaliforniaBerkeley,USA)AmélieMarian(Rutgers,USA)Angelos-ChristosAnadiotis(colePolytechnique,France)AnnikaHinze(TheUniversityofWaikato,USA)BenotGroz(UniversitéParis-Saclay,France)BorisGlavic(IllinoisInstituteofTechnology,USA)ChaokunWang(TsinghuaUniversity,China)DanielDeutch(TelAvivUniversity,Israel)DavidEyers(UniversityofOtago,USA)DongWen(UniversityofTechnologySydney,Australia)FabianSuchanek(TélécomParisUniversity,France)FanZhang(GuangzhouUniversity,China)GuanfengLiu(MacquarieUniversity,Australia)HelenaGalhardas(UniversityofLisbon,Portugal)IoanaGiurgiu(IBMResearch,USA)JensTeubner(TUDortmundUniversity,Germany)JiangDu(Facebook,USA)KaterinaTzompanaki(CYCergyParisUniversity,France)KatjaHose(AalborgUniversity,Denmark)KazuoGoda(TheUniversityofTokyo,Japan)KeishiTajima(KyotoUniversity,Japan)LetiziaTanca(PolitecnicodiMilano,Italy)LuChen(AalborgUniversity,Denmark)LucBouganim(INRIA,France)LucianPopa(IBMAlmadenResearchCenter,USA)MichaelGrossniklaus(UniversityofKonstanz,Germany)MichaelGubanov(FloridaStateUniversity,USA)NesreenAhmed(IntelLabs,USA)OanaBalalau(INRIAandcolePolytechnique,France)OscarRomero(UniversitatPolitècnicadeCatalunya,Spain)PinarKaragoz(METU,Turkey)QiongLuo(HongKongUniversityofScienceandTechnology,China)SaravananThirumuruganathan(QCRI,HamadBinKhalifaUniversity,Qatar)SlavaNovgorodov(eBayResearch,USA)VijayGadepally(MITLincolnLaboratory,USA)WentaoWu(MicrosoftResearch,USA)XiaoyangWang(ZhejiangGongshangUniversity,China)XinCao(UniversityofNewSouthWales,Australia)YannisKatsis(IBMResearch,USA)YannisVelegrakis(UtrechtUniversity,Netherlands)YashGovind(UniversityofWisconsinMadison,USA)YasuhiroFujiwara(NTTCommunicationScienceLaboratories,Japan)YuanyuanTian(IBMAlmaden,USA)YuchenLi(SingaporeManagementUniversity,Singapore)ZoiKaoudi(TUBerlin,Germany)PVLDBVol.
13,No.
12xiiiINDUSTRIALTRACKCHAIRSANDREVIEWERS-Vol.
13IndustrialTrackPCChairsTizianaCatarci(UniversityofRomeLaSapienza,Italy)CarloCurino(MicrosoftResearch,USA)DiveshSrivastava(AT&TLabs,USA)IndustrialTrackReviewersAllisonHolloway(Oracle,USA)AltigrandaSilva(UniversidadeFederaldoAmazonas,Brazil)AnjaGruenheid(GoogleInc.
,USA)AzzaAbouzied(NewYorkUniversityAbuDhabi,UnitedArabEmirates)CarloCurino(Microsoft,USA)DanicaPorobic(Oracle,USA)DiveshSrivastava(AT&TLabsResearch,USA)EntongShen(AmazonWebServices,USA)FabrizioSilvestri(Facebook,UnitedKingdom)FatmaOzcan(IBMResearch-Almaden,USA)FeifeiLi(AlibabaGroup,China)GuoliangLi(TsinghuaUniversity,China)HeikoSchuldt(UniversityofBasel,Switzerland)IriniFundulaki(ICSFORTH,Greece)JanaGiceva(TUMunich,Germany)JianguoWang(AmazonWebServices,USA)JohannesGehrke(Microsoft,USA)MeihuiZhang(BeijingInstituteofTechnology,China)MónicaScannapieco(ISTAT,Italy)NormanMay(SAPSE,Germany)OlgaPoppe(Microsoft,USA)RobertoZicari(GoetheUniversityFrankfurt,Germany)RussellSears(Apple,USA)SameerAgarwal(Facebook,USA)SangCha(SeoulNationalUniversity,SouthKorea)SihemAmer-Yahia(CNRS,France)SongtaoGuo(LinkedIn,USA)SoniaBergamaschi(UniversitàdiModenaeReggioEmilia,Italy)TizianaCatarci(UniversityofRome"LaSapienza",Italy)WolframWingerath(Baqend,Germany)YaronKanza(AT&TLabs-Research,USA)YasushiSakurai(OsakaUniversity,Japan)PVLDBVol.
13,No.
12xivTUTORIALTRACKCHAIRS-Vol.
13TutorialTrackChairs:MichaelJ.
Carey(UniversityofCalifornia,Irvine,USA)RenéeJ.
Miller(NortheasternUniversity,USA)PVLDBVol.
13,No.
12xvLETTERFROMTHEEDITORSINCHIEFTheProceedingsoftheVLDBEndowment(PVLDB)providesahigh-qualityjournalpublicationservicetothedatamanagementresearchcommunity.
Eachvolumeofferstwelvemonthlysubmissiondeadlinesonthefirstdayofeachmonthandaquick,sixweekreviewingcycle.
ThispublicationmodelwaspioneeredbyPVLDBandcombinesajournal-stylereviewingprocess,whichincludesathree-monthrevisioncycle,withtheagilityandvisibilityprovidedbyrapidon-linepublication,andpresentationattheannualVLDBconference.
PVLDBattractsmanysubmissionsspanningdiversedatamanagementtopics,andthePVLDBreviewingprocessisimplementedbyalargeteamofdedicatedresearchers.
TheReviewBoardofPVLDBVolume13consistsof186expertresearchers,andreviewingiscoordinatedby18AssociateEditors.
ReviewBoardmembersprovidetimely(withina3-weekdeadline)high-qualityreviews,andparticipateactivelyinonlinediscussionsledbytheAssociateEditorsforeachpaper.
Whenneeded,theAssociateEditorstogetherwiththeEditors-in-Chiefsolicitadditionalreviewsfromexternalexperts.
Wegivespecialthanksheretothoseadditionalreviewerswhoinmostcasesneedtocompletetheirexpertreviewsonaveryshortnotice.
Mostoftheacceptedpapersgothrougharevisionprocessthatrequiresasecondroundofreviewsaftertheauthorshaveaddressedaninitialsetofissuesandconcernsraisedbythereviewersduringthefirstround.
Somepapersarefurtheracceptedwithshepherding,whichmeansthatoneofthereviewersworkswiththeauthorstoaddressafinalsetofcomments.
ThisisthetwelfthissueofthethirteenthvolumeofPVLDB.
Thisissuefeatures95papers,allassociatedwiththeVLDB'20conference:51demonstrations,31industrialtrackpapers,sixtutorials,threeinvitedpapersforthethreeVLDBEndowmentawards,threeinvitedpapersforthethreekeynotetalks,andonepanelabstract.
The51accepteddemonstrationscovertopicssuchasqueryoptimizationatalllevels,advancedapplicationssuchasexplanationandcausalityonrelationaldatabases,andavarietyofworksstudyingtheinterplaybetweenmachinelearningandscalabledatamanagement.
Knowledgebasemanagement,newsverificationandfact-checking,aswellasthreetoolsformonitoringanepidemicsuchastheCovidonearealsopartofthisyear'sselection.
TheindustrialtrackatVLDB2020accepted31papersfromatotalof69submissions;4ofthesepaperswereaccepteddirectlyand27paperswereacceptedafterarevisionphase.
Theseworks,reportedbylargeandsmallcompaniesfromaroundtheworld,showcasethediversityofindustrialresearchonanalyticalqueryprocessing,benchmarking,blockchain,cloudsystems,datastorage,graphsystems,HTAP,indexing,machinelearningsystems,naturallanguageprocessing,performancetuning,provenance,queryoptimization,semi-structureddata,timeseries,transactionprocessingandviews.
ThisissuealsoincludesdescriptionsofthesixtutorialspresentedattheVLDB'20conference.
Thosetutorialscoveredsixtimelyandexcitingtopics:permissionedblockchaintechnology,robustqueryprocessingtechniques,datacollectionandqualityfordeeplearning,similarityqueryprocessing(forhigh-dimensionaldata),tableextraction/understandingtechniques,andfairnessinevaluatingandscoringdata.
ThisissuefurtherincludesthreeinvitedpapersforthethreeVLDBEndowmentawards:The2020VLDBEarlyCareerResearchContributionAward.
TheawardthisyearwenttoProf.
MeihuiZhangforcontributionstocleaning,integrationandanalysistechniquesforhealthcaredata,anddeploymentofthosetechniquesinhospitals.
Thesecondawardisthe2020VLDBWomeninDatabaseResearchAward,whichwenttoProf.
AnastasiaAilamakiforpioneeringresearchontheinteractionbetweenhardwaremicro-architectureanddatabaseengineperformance.
Finally,the2020VLDBTestofTimeAwardwenttothePVLDBVol3paperentitled"Dremel:interactiveanalysisofweb-scaledatasets".
ThreekeynotespeakerswereinvitedtodelivertalksattheVLDB'20conferenceandinvitedpapersassociatedwiththosetalksareincludedinthisissue.
Prof.
DanOlteanuspokeon"TheRelationalDataBorgisLearning".
Prof.
JuliaStoyanovichtalkedabout"ResponsibleDataManagement"andProf.
MasaruKitsuregawapresented"Out-of-orderExecutionofQueryProcessingandNewAdvancesinCOVID-19Information".
Finally,theVLDB'20conferencealsoincludedapanelentitled"Panel-WindsfromSeattle:DatabaseResearchDirections",andanabstractforthepanelisincludedinthisissue.
PVLDBVol.
13,No.
12xviThesepaperswillbepresentedatthe46thInternationalConferenceonVeryLargeDataBases(PVLDB2020),originallyplannedtobeheldinTokyo,JapanduringAugust31toSeptember4,2020butnowtobeheldonlineduetothecoronaviruspandemic.
Wehopethatthereaderswillfindtheselectedpapersengaging,andthoughtprovoking.
Wealsohopethattheselectedpaperswillprovidevaluableinsightsandinspirenovelsystemscontributionsandfollow-upresearch.
MagdalenaBalazinskaandXiaofangZhouPVLDBVolume13EditorsinChief