With the column attribute SYSTEM DEFAULT COMPRESSION, additional space can be saved if columns contain the system default very often.

当使用列属性 SYSTEM DEFAULT COMPRESSION 时，如果列中包含很多的系统默认值，则可以节省更多的空间。

youdao

As revealed last year, the US Department of Homeland Security is working on a system called FAST (Future Attribute Screening Technology) that relies on an array of sensors and advanced algorithms to detect physiological and behavioral cues that are said to indicate malintent.

ENGADGET: Minority Report at 10: a look at technology from today to 2054