What is the method for refreshing extracts from Tableau Desktop?

The method for refreshing extracts in Tableau Desktop is through the "Refresh from Source" option. This option allows users to update their data extracts to reflect any changes made in the original data source since the extract was last created. When this option is selected, Tableau will connect to the source data and pull in the most current data available, ensuring that the extract is up to date.

This process is essential for maintaining data accuracy and integrity in visualizations that rely on the extracts. By using this method, users can easily get the latest insights from their data without needing to republish or create new extracts from scratch.

Other options, while relevant in different contexts, do not serve the purpose of refreshing extracts directly. For instance, republishing a data source typically involves changes to the data source configuration or new mappings rather than just refreshing the data. Tableau Bridge is designed for keeping extracts synchronized with on-premises data sources but is not a direct refresh method within Tableau Desktop. Downloading a data extract is a process for exporting data rather than refreshing it. Thus, "Refresh from Source" is the most straightforward and effective method for ensuring that Tableau extracts reflect the latest data from their source.