In most languages, a variable is just “what it is right now.” You assign, the old value is gone. Want “what was x two hours ago?” or “when did x hit its max?” you bolt on logging, event stores, audit ...

Welcome to this tutorial where we'll demonstrate how to work with large datasets in KDB-X to analyze time-series data. One of the key features of KDB-X is its ability to handle huge volumes of data ...