Spotfire can read table data from different type of files.
But there are two native Spotfire formats:
Both supported by the Rocket Table
Rocket Table is a lightweight table viewer for files in SAS7BDAT, SBDF, STDF and CSV formats. It supports sime nice features like: filtering, sorting, highlighting. It is cross-platform and minimalistic.
So if you have *.sbdf or *.stdf files, but don't have Spotfire, you are able to read these files using this application.
See more about Spotfire internals on Blogger Xantorohara, 2017-08-31, Spotfire
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