Pentaho interview question and answers
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The document provides an overview of Pentaho, an open-source platform designed for data integration, analytics, and business intelligence, highlighting its features such as direct analytics on MongoDB and support for Hadoop through YARN. It also discusses the Pentaho BI project, its community benefits, trademark information, and licensing under the GPL. Additionally, it includes frequently asked questions related to Pentaho's functionality and architecture.
Pentaho interview question and answers
- 1. http://www.enrollmytraining.com www.enrollmytraining.com,Mail Us: [email protected] Call Us:+91-9705981289,Skype id: enrollmy.training Pentaho Interview questions and answers 1. ExplainPentaho? - Pentahoaddressesthe barriersthatblockyour organization’sabilitytogetvalue fromall your data. Our platformsimplifiespreparingand blendinganydataand includesaspectrumof tools to easilyanalyze,visualize,explore,reportand predict.Open,embeddable andextensible,Pentaho isarchitectedtoensure that eachmemberof your teamfrom developerstobusinessuserscaneasily translate dataintovalue. 2. Mentionmainfeaturesof Pentaho? - DirectAnalyticsonMongoDB:Pentahoempowers businessanalystsandITto access,analyze,and
- 2. http://www.enrollmytraining.com www.enrollmytraining.com,Mail Us: [email protected] Call Us:+91-9705981289,Skype id: enrollmy.training visualize MongoDBdata‘at the source’ withself- service dragand droptools.Thisnative integrationleveragesthe MongoDBAggregation Framework,ReplicationandTagSetsfor direct analysisonMongoDB collectionswithnoimpacton throughput.Withnocodingrequired,organizations can unleashthe value of theirMongoDBdata for analyticsat scale. – PentahoData– Science Pack: Pentaho’sDataScience Packoperationalizes predictive modelingandmachine learningwhile allowingdatascientistsanddeveloperstooffload the labor of data preparationtoPentahoData Integration.The PackincludesPDIpluginsforR ScriptExecution,WekaScoring,andWeka Forecasting.
- 3. http://www.enrollmytraining.com www.enrollmytraining.com,Mail Us: [email protected] Call Us:+91-9705981289,Skype id: enrollmy.training - Full YARN SupportforHadoop: Pentaho’sYARN integrationenablesorganizationstoexploitthe full computingpowerof Hadoopwhile leveraging existingskillsetsandtechnologyinvestments. Together,PentahoandYARN allowITto designand execute highperformance dataorchestrationwithout coding,whichleadstomore rapidresultsfromBig Data engineeringandblending. 3. What is the PentahoBIProject? - ThePentahoBIProjectisanongoingeffortbythe OpenSource communitytoprovide organizationswith best-in-classsolutionsfortheirenterprise BusinessIntelligence (BI) needs. The PentahoBI Projectencompassesthe followingmajorapplication areas:
- 4. http://www.enrollmytraining.com www.enrollmytraining.com,Mail Us: [email protected] Call Us:+91-9705981289,Skype id: enrollmy.training Reporting Analysis Dashboards Data Mining BusinessIntelligence Platform 4. Who benefitsfromthe PentahoBIProject? Java™ developerswhocanuse projectcomponentsto rapidlyassemblecustomBIsolutions ISVswhocan enhance the value andcapabilityof theirsolutionsbyembeddingBIfunctionality End-Userswhocan rapidlydeploypackagedBI solutionswhichare eithercompetitiveorsuperior to traditional commercial offeringsata dramaticallylowercost The PentahoBI Projectteamwhoare free topursue theirpassionforBI while beingapart of the Open Source movementwhichisrevolutionizingthe
- 5. http://www.enrollmytraining.com www.enrollmytraining.com,Mail Us: [email protected] Call Us:+91-9705981289,Skype id: enrollmy.training software industrytobetterserve users 5. Where doesthe name Pentahocome from? - Allegedlyfromthe PentahoIndians,whomight have settledinFloridainthe eighteenthand nineteenthcenturies,andmayormay not have been responsible fordomesticatingthe WestIndian Manatee.Accordingto some reports,priortothe mid-nineteenthcentury,manateeswere aggressive animals;fasterthana porpoise,withabelligerent nature and a penchantforgrabbingoars and tipping canoes.Some accountsassertthat the manatee problembecame sosevere thattrade and communicationalongthe waterwaysof Floridabecame almostimpossible. The allegedPentahoIndians,inanattemptto
- 6. http://www.enrollmytraining.com www.enrollmytraining.com,Mail Us: [email protected] Call Us:+91-9705981289,Skype id: enrollmy.training improve communicationandtrade amongstIndian nations,setaboutto tame the wildmanatees.After identifyingthe highcaffeinecontentof water hyacinthas a primaryfactor, theyinventeda selectivebreedingprogramforthe aquaticplantto remove the stimulantfromthe disruptive mammal’s diet.Theywere sosuccessful thattodaythe manatee isa slowmoving,docile animal.The PentahoIndianshave neverbeengivencreditinthe historybooksforthisunbelievable feat,possibly because we made themup.Or perhapsNot. 6. What if I or my organizationwantstodistribute software thatembedsthe PentahoBIPlatformto customers?
- 7. http://www.enrollmytraining.com www.enrollmytraining.com,Mail Us: [email protected] Call Us:+91-9705981289,Skype id: enrollmy.training - The current version2alpha release of the PentahoBIPlatform,aswell asfuture versions, will be distributedunderthe termsof the GNU General PublicLicense Version2(GPLv2).Under the GPL, if you intendtodistribute GPL-licensedcode to yourcustomersas part of othersoftware you have created,youmay,dependingonthe software youhave created,be requiredtoGPL that code. Companiesthatwishtodistribute the PentahoBI Platformhave the optionof purchasingacommercial license fromPentahoCorporation.A commercial license wouldexemptyoufromGPLobligations. 7. Is Pentahoa Trademark? - Yes,Pentaho,itslogodevice,PentahoBI,the
- 8. http://www.enrollmytraining.com www.enrollmytraining.com,Mail Us: [email protected] Call Us:+91-9705981289,Skype id: enrollmy.training PentahoBIProject,andother relatedtermsare all trademarksthat are ownedbythe company.Trademarks and the resultingbrandsare an importantasset, especiallytoanOpenSource project. 8. What is PentahoMetadata?How doesit work? - PentahoMetadataisa feature of the PentahoBI Platformdesignedtomake iteasierforusersto access informationinbusinessterms.WithPentaho’s opensource metadatacapabilities,administrators can define alayerof abstractionthat presents database informationtobusinessusersinfamiliar businessterms.Administratorsidentify relationshipsbetweentablesinthe database, create business-language definitionsforcomplex or
- 9. http://www.enrollmytraining.com www.enrollmytraining.com,Mail Us: [email protected] Call Us:+91-9705981289,Skype id: enrollmy.training crypticdatabase tablesandcolumns,set security parameterstolimitdataaccess to appropriate users,specifydefaultformattingfordatafields, and provide additional translationsforbusiness termsfor multi-lingual deployments.Businessusers can thenuse Pentaho’snewadhoc query capabilitiestochoose the specificelementsthey wouldlike toinclude inagivenreport,suchas orderquantitiesandtotal spendingbycustomer groupedbyregion.The SQL requiredtoretrieve the data isgeneratedautomatically. 9. Why is Pentahousingthe General PublicLicense (GPL) for the PentahoBIPlatform? - The GPL isthe most widelyusedopensource
- 10. http://www.enrollmytraining.com www.enrollmytraining.com,Mail Us: [email protected] Call Us:+91-9705981289,Skype id: enrollmy.training software license.Currently,more than60% of open source projectstrackedon freshmeat.orgare GPL- licensed.The GPLiswell understoodbythe market and the legal communityandhasnotable precedents such as MySQL, Javaand the Linux kernel asGPL- licensedprojects.Because the GPLiswhat’sknown as a “reciprocal license”itensuresthatthe software isopenandremainsopen. 10. What isthe PentahoReportingEvaluation? - PentahoReportingEvaluationisaspecialized package of a subsetof the PentahoReporting capabilities,designedfortypical first-phase evaluationactivitiessuchasaccessingsample data, creatingandeditingreports,andviewingand
- 11. http://www.enrollmytraining.com www.enrollmytraining.com,Mail Us: [email protected] Call Us:+91-9705981289,Skype id: enrollmy.training interactingwithreports.ItincludesPentaho platformcomponents,the PentahoReportDesigner and an ad hoc reportinginterface bundledintoa single downloadintendedforlocal installation. Sample OLAPreportsanddashboardexamplesare also includedforthose interested,butthe package includesthe designtoolsandpublishing capabilitiesforPentahoReportingonly. What's the difference betweentransformationsand jobs?Postanswer 1 How to doa database joinwithPDI?PostanswerShow 1 How to sequentialize transformations?Post answerShow 1 Whenrunninga Transformation,the dialoghastwo
- 12. http://www.enrollmytraining.com www.enrollmytraining.com,Mail Us: [email protected] Call Us:+91-9705981289,Skype id: enrollmy.training tables,one forArgumentsandone forVariables. What isthe difference betweenthe two?Post answerShow 1 How to use database connectionsfromrepository? PostanswerShow 1 How doyou insertbooleansintoaMySql database, PDI encodesabooleanas'Y' or 'N' and thiscan't be insertintoa BIT(1) columninMySql.Post answerShow 1 Whenyoucreate a normal database connection,you have to editthe transformationorjobto connect to a differenthostordatabase.Howcan I make thisa variable?PostanswerShow 1 By defaultall stepsinatransformationrunin
- 13. http://www.enrollmytraining.com www.enrollmytraining.com,Mail Us: [email protected] Call Us:+91-9705981289,Skype id: enrollmy.training parallel,howcanI make itso that 1 row gets processedcompletelyuntil the endbefore the next row isprocessed?PostanswerShow How doyou duplicate afieldinarow ina transformation?PostanswerShow 1 Why can't I duplicate fieldnamesinasingle row? PostanswerShow I've got a transformationthatdoesn'trunfast enough,butitis hard to tell inwhatorderto optimize the steps.WhatshouldIdo?Post answerShow We will be usingPDIintegrated inaweb applicationdeployedonanapplicationserver. We've createda JNDIdatasource inour application
- 14. http://www.enrollmytraining.com www.enrollmytraining.com,Mail Us: [email protected] Call Us:+91-9705981289,Skype id: enrollmy.training server.Of course Spoondoesn'trunin the context of the applicationserver,sohowcan we use the JNDIdata source in PDI?PostanswerShow The Text File Inputstephasa Compressionoption that allowsyoutoselectZipor Gzip,but itwill onlyreadthe firstfile inZip.Howcan I use Apache VFSsupportto handle tarballsormulti-file zips?PostanswerShow ExplainPentahoDataIntegrationarchitecture? http://www.enrollmytraining.com/pentaho-online-training/