
293Big Data Exploration
analyzing a single tuple (or at most a few tuples), while a slide gesture can be
seen as multiple single touches and can be used to explore a given data area.
As such, only a sample of the data is processed every time, while now the user
has full control regarding which data are processed and when; by changing
the direction or the speed of a slide gesture, users can control the exploration
process, while observing running results as they are visualized by dbTouch.
The main challenge with dbTouch is in designing database kernels that
can react instantly to every touch and to provide quick response times even
though the da ...