Data within a database exists across multiple tables, JOINs allow you to combine datasets into new tables for analysis.
Once a dashboard is built and shared it is not done. You should maintain it and improve it by using audience feedback.
Learn the best practices and common pitfalls of sharing out your dashboard to a wide audience.
Maximize understanding of a dashboard by arranging data visualizations intelligently.
Decide what chart works best for your visualization based on if you want to show composition, relationship, distribution or comparison.
Learn the best practices behind dashboard design to support decision making