---
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title: Tableau Concepts
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version: current
locale: en-gb
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canonical_url: https://help.tableau.com/current/public/desktop/en-gb/concepts.htm
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description: Learn core Tableau concepts like dimensions, measures, data types, and aggregation.
---
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# Tableau Concepts

What are dimensions and measures? Why are some fields dimensions and others measures?

Why is the background colour blue for some fields, and green for others?

How does adding a filter affect my viz?

How does Tableau aggregate data in a view?

The topics in this section cover concepts that answer these questions to help you understand why Tableau does what it does.

If you're new to Tableau Desktop, also see other topics in [Get Started](https://help.tableau.com/current/public/desktop/en-gb/gettingstarted_overview.htm).

If you're new to Tableau Public, also see Tableau Public [Resources](https://public.tableau.com/en-gb/s/resources).

## Other articles in this section