Extracting Data:-
- Extracts are saved subsets of a data source that you can use to improve performance, upgrade your data to allow for more advanced capabilities, and analyze offline.
- You can create an extract by defining filters and limits that include the data you want in the extract.
- After you create an extract you can refresh it with data from the original data source. You can either fully refresh the data, replacing all of the extract contents; or you can increment the extract; which only adds rows that are new since the last refresh
- Improve performance. For file based data sources such as Excel or Access, a full extract takes advantage of the Tableau data engine. For large data sources, a filtered extract can limit the load on the server when you only need a subset of data.
- Add functionality to file based data sources, such as the ability to compute Count Distinct.
- Provide offline access to your data. If you are traveling and need to access your data offline, you can extract the relevant data to a local data source.
Thanks Gurus,
Prazval.ks
