Tableau certifications are valid for 24 months from the date you passed the exam. To maintain your active status you will want to pass the corresponding exam again. Expired titles are unable to receive certain benefits and do not allow for discounts on exam purchases. Digital badges for expired...
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Tableau可以连接到两类数据源。一类是本地数据文件,例如:Excel、CSV、TXT、JSON、PDF等;另一类是服务器,例如:Mysql、SQL Server、Oracle,还涵盖了目前国内外各大主流云厂商提供的远程服务器。下图所示: 图1 Tableau2020.02数据源界面截图 可以看出,Tableau在数据源连接上提供了很丰富的选择。而作为R语言的应用,上面图...