Firstly, ETL stands for extract, transform and load. The job role of an ETL administrator is designing, creating, and implementing data pipelines and also maintaining data warehouses. They also work on data management support activities, data modeling, and process documentation.
If you want to learn this technology further, I suggest you go for Tableau-desktop-server-training from Intellipaat.
Before enrolling have a look at this video on how Intellipaat helped Uday in his career transition -
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