{"id":569,"date":"2018-05-11T01:54:30","date_gmt":"2018-05-11T01:54:30","guid":{"rendered":"https:\/\/www.gologica.com\/blog\/?p=569"},"modified":"2019-11-26T01:44:31","modified_gmt":"2019-11-26T01:44:31","slug":"tableau-interview-questions-and-answers","status":"publish","type":"post","link":"https:\/\/www.gologica.com\/elearning\/tableau-interview-questions-and-answers\/","title":{"rendered":"Tableau Interview Questions and Answers"},"content":{"rendered":"<p><strong>However will u improve performance of tableau server?<\/strong><\/p>\n<ul>\n<li>Avoid fast filter as attainable. If needed, we will use context filter for higher performance.<\/li>\n<li>higher application program.<\/li>\n<li>Use extracts rather than live affiliation.<\/li>\n<li>Use cache mechanism<\/li>\n<li>Use progressive extractions<\/li>\n<li>Avoid the high resolutions pictures<\/li>\n<li>alter the count of application server and vizql server for hit cache.<\/li>\n<li>Set each at 1x to 2x times the quantity of process cores gift on the server<\/li>\n<li>User shouldn&#8217;t access the dashboard whereas loading the information<\/li>\n<\/ul>\n<p><strong>If my dashboard is taking long term to render on server what may be the reason?<\/strong><\/p>\n<ul>\n<li>Use Window_sum() rather than totals(). it&#8217;s slow whereas extracting.<\/li>\n<li>Avoid fast filters in dashboards<\/li>\n<li>supply knowledge bins offer higher performance than tableau bins.<\/li>\n<li>Use sql question rather than knowledge mixing if you&#8217;re victimization RDBMS.<\/li>\n<li>Use but five views in dashboard.<\/li>\n<li>Optimizing knowledge extracts<\/li>\n<\/ul>\n<p><strong>Once ten worksheets area unit combined and created an entire dashboard if one worksheet is updated. Is it necessary to publish solely modified worksheet or entire dashboard?<\/strong><\/p>\n<p>solely modified worksheet.<\/p>\n<table style=\"background: #d9dde2;\">\n<tbody>\n<tr>\n<td style=\"border: 1px solid black;\"><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><a href=\"https:\/\/www.gologica.com\/course\/tableau\/\"><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-full wp-image-2742\" src=\"https:\/\/www.gologica.com\/elearning\/wp-content\/uploads\/2018\/05\/Tableau-Interview-Questions-and-Answers-1.jpg\" alt=\"Tableau Interview Questions and Answers\" width=\"850\" height=\"200\" srcset=\"https:\/\/www.gologica.com\/elearning\/wp-content\/uploads\/2018\/05\/Tableau-Interview-Questions-and-Answers-1.jpg 850w, https:\/\/www.gologica.com\/elearning\/wp-content\/uploads\/2018\/05\/Tableau-Interview-Questions-and-Answers-1-460x108.jpg 460w, https:\/\/www.gologica.com\/elearning\/wp-content\/uploads\/2018\/05\/Tableau-Interview-Questions-and-Answers-1-768x181.jpg 768w, https:\/\/www.gologica.com\/elearning\/wp-content\/uploads\/2018\/05\/Tableau-Interview-Questions-and-Answers-1-100x24.jpg 100w, https:\/\/www.gologica.com\/elearning\/wp-content\/uploads\/2018\/05\/Tableau-Interview-Questions-and-Answers-1-600x141.jpg 600w, https:\/\/www.gologica.com\/elearning\/wp-content\/uploads\/2018\/05\/Tableau-Interview-Questions-and-Answers-1-120x28.jpg 120w, https:\/\/www.gologica.com\/elearning\/wp-content\/uploads\/2018\/05\/Tableau-Interview-Questions-and-Answers-1-310x73.jpg 310w\" sizes=\"(max-width: 850px) 100vw, 850px\" \/><\/a><\/p>\n<p><strong>That databases offers best performance once connected live?<\/strong><\/p>\n<p>Expected answer from you. Please recommend US. Analytical databases area unit smart for tableau. Means OLAP.<\/p>\n<p>Exact Ans: Native databases<\/p>\n<p><strong>What if client is posing for knowledge invigorated at minute level? What would you recommend to the customer?<\/strong><\/p>\n<p>it&#8217;s performance degrade. victimization JavaScript arthropod genus we tend to do this.<\/p>\n<p><strong>the way to switch views in dashboard?<\/strong><\/p>\n<p>victimization parameters<\/p>\n<p><strong>What advanced dashboard you designed thus far?<\/strong><\/p>\n<p>Displaying bar charts on tool tip crop up, switch views dynamically, LODs<\/p>\n<p><strong>What square measure challenges moon-faced once operating with vast volumes of data?<\/strong><\/p>\n<ol>\n<li>read running slow.<\/li>\n<li>information extraction.<\/li>\n<li>Alignment issue with information.<\/li>\n<li>Testing information<\/li>\n<\/ol>\n<p><strong>However, did you handle operating with vast volumes of information and the way concerning performance tuning?<\/strong><\/p>\n<ol>\n<li>Optimize the info model.<\/li>\n<li>Use statistics<\/li>\n<li>Tune your indexes<\/li>\n<li>Partition the info in info level.<\/li>\n<\/ol>\n<p><strong>Tells U.S. concerning conditional data formatting in tableau?<\/strong><\/p>\n<p>victimization KPI, color marks and calculation field<\/p>\n<p><strong>what percentage dashboards you created therefore far?<\/strong><\/p>\n<p>Nearly fifty dashboards<\/p>\n<p><strong>have you ever ever worked on making custom maps?<\/strong><\/p>\n<p>No. If affirmative exploitation mapbox<\/p>\n<p><strong>In backend information you&#8217;ve got day level knowledge however are you able to amendment it to week\/month\/year level in tableau?<\/strong><\/p>\n<p>If we want to alter columns from date to different format<\/p>\n<ol>\n<li>DATETRUNC for correct dates.<\/li>\n<li>DATEPART<\/li>\n<\/ol>\n<p><strong>If my Informatica job is finished and that i need schedule tableau report. however will we have a tendency to do it?<\/strong><\/p>\n<p>tabcmd runschedule or tabcmd refresh extracts can do the task. we want to assemble in informatica level. it&#8217;ll begin once load is completed.<\/p>\n<p><strong>However, does one move migrating book from reportage to QA or Prod environments or any completely different environments etc?<\/strong><\/p>\n<p>Development is happened in desktop. we are able to directly denote to QA for testing and prod for live. Development server isn&#8217;t needed for this.<\/p>\n<p><strong>have you ever ever worked with director level personnel in your projects?\\<\/strong><\/p>\n<p>Yes.<\/p>\n<p><strong>However, does one train power users?<\/strong><\/p>\n<p>Below are explained in high level. however not technical. we should always use practical nomenclature.<\/p>\n<ul>\n<li>Purpose of dashboard.<\/li>\n<li>Filters<\/li>\n<li>Actions<\/li>\n<li>Drill down<\/li>\n<li>Conditional data formatting<\/li>\n<\/ul>\n<p><strong>what&#8217;s level of detail? state of affairs during which level of detail is used?<\/strong><\/p>\n<p>LOD is sweet conception for various knowledge between AVG or total and details level.<\/p>\n<ul>\n<li>fastened<\/li>\n<li>embody.<\/li>\n<li>Exclude<\/li>\n<\/ul>\n<table style=\"background: #d9dde2;\">\n<tbody>\n<tr>\n<td style=\"border: 1px solid black;\"><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Are you ever worked on teams and sets? that situations are these applicable?<\/strong><\/p>\n<p>Yes.<\/p>\n<p>Groups:<\/p>\n<ul>\n<li>we are able to see the cluster of knowledge in single row.<\/li>\n<li>If we wish to calculate and see the information for cluster for values<\/li>\n<\/ul>\n<p>Sets:<\/p>\n<ul>\n<li>Sets are custom fields that outline a set of knowledge supported some conditions.<\/li>\n<li>For conditions<\/li>\n<li>high N<\/li>\n<li>mix 2 set of knowledge.<\/li>\n<\/ul>\n<p><strong>If you have got a dimension referred to as AGE with values ( ten,20,30,40,50). If i produce {a cluster gaggle|a bunch} referred to as but thirty and another group referred to as but twenty with in this? If affirmative how?<\/strong><\/p>\n<p>We are able to produce sup teams<\/p>\n","protected":false},"excerpt":{"rendered":"<p>However will u improve performance of tableau server? Avoid fast filter as attainable. If needed, we will use context filter &hellip;<\/p>\n","protected":false},"author":1,"featured_media":2175,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"pmpro_default_level":"","footnotes":""},"categories":[12],"tags":[],"coauthors":[182],"class_list":["post-569","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-oracle_intervew_questions","pmpro-has-access","user-has-not-earned"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Tableau Interview Questions and Answers - GoLogica<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.gologica.com\/elearning\/tableau-interview-questions-and-answers\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Tableau Interview Questions and Answers - GoLogica\" \/>\n<meta property=\"og:description\" content=\"However will u improve performance of tableau server? 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