This is what's called "quantum parallelism" and it's a key element of QC.
这就是所谓的“量子并行性”，它是 QC 的一个重要元素。
2
A complete list is beyond the scope of this article, but it's probably safe to say that the first useful QC is still one or two decades away.
完整的列表已超出了本文的范围，但是还要再过一、二十年才会有第一个有用的QC的说法可能还是可靠的。
3
If the database system you are monitoring is for decision support (DSS), and the queries are long and complicated, don't have the quality control (QC) agent run a large query.