Portability and security
Let's say that your data is hosted on a database server accessible only from inside your office network. Normally, you'd have to be onsite or using a VPN to work with the data. With an extract, you can take the data with you and work offline.
An extract file contains data extracted from the source. When you save a workbook, you may save it as a Tableau workbook (.twb) file or a Tableau Packaged Workbook (.twbx) file. A workbook (.twb) contains definitions for all the connections, fields, visualizations, and dashboards, but does not contain any data or external files, such as images. When you save a packaged workbook (.twbx), any extracts and external files are packaged together in a single file with the workbook. ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access