.TWB File Extension
Tableau Workbook File
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What is a TWB file?
Workbook file created by Tableau Desktop, a whiteboard data analysis and visualization application; stores data in the categories of "dimensions" and "measures;" also stores visualizations such as graphs and charts, as well as references to imported data sources.
Tableau workbooks enable users to save the state of visualizations and data analyses. The workbooks can combine data from Excel files or other data sources, and the data can be stored across multiple workspace tabs.
NOTE: Tableau Workbook files use XML formatting.