When creating an Explore, what must be included in its definition?

In Looker, when defining an Explore, it is essential to include at least one view in its definition. The view acts as the primary data source for the Explore, allowing users to access and analyze data effectively. A view defines the structure of the data that will be queried and is where measures and dimensions are defined. Without a view, the Explore would not have any data context, making it impossible for users to run analyses or visualizations based on the Explore.

While dimensions and measures are important components that can enhance the functionality of an Explore, they are derived from the views included in it. Similarly, while derived tables can be part of the setup, they are not a required component to create a basic Explore. Thus, the inclusion of at least one view is a fundamental requirement for creating a valid Explore in Looker.