What are data streams?

A data stream is like a never-ending line of letters that keeps coming one after another, just like when you write on a long piece of paper.

Imagine you're at a candy store, and every time someone buys a candy, the clerk writes down the name of the candy on a big scroll. That scroll is growing longer as more people buy candies, that’s how a data stream works! Each new candy name is like a single piece of data coming in one by one.

Think of water flowing from a tap into a glass. The water keeps coming, drop by drop. A data stream is just like that water, it's a continuous flow of information, one piece at a time. You don’t need to wait for the whole glass to fill up before you can start drinking; you can take a sip as soon as the first few drops come in.

Your favorite cartoon might have characters who talk non-stop, that’s like a data stream of words! Or think about your toy car moving on a track, one step at a time, each step is like a piece of data coming in.