BigData / Tableau Interview Questions
What is the difference between a.twb and a.twbx file?
Both are Tableau workbook file formats, but they differ in whether the data itself travels along with the visual content.
| .twb | .twbx |
| Plain XML file describing worksheets, dashboards, and connections. | A packaged ZIP-like archive bundling the .twb plus data extracts and local files. |
| Requires access to the original data source to open correctly. | Self-contained; opens correctly on any machine, no external access needed. |
| Small file size. | Larger file size, since it includes the extract data. |
File -> Export Packaged Workbook -> saves a .twbx
The practical rule: if you're sharing a workbook with someone who doesn't have access to your live database (e.g. emailing it to a colleague or posting it to Tableau Public), use .twbx so the data goes with it; if you're just saving your own work against a source you'll always have access to, a plain .twb is smaller and fine.
Which file format bundles the data extract along with the workbook?
Why would you choose .twbx when sharing a workbook externally?
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