ELI5: Explain Like I'm 5

Preordered field

Imagine going to a store to buy the newest toy that everyone wants. But because everyone wants it, the store doesn't have enough toys for everyone to have one right away. So, the store lets people "preorder" the toy, which means they can pay for it and reserve it before it's even available in the store.

In computer programming, a preordered field is kind of like a preordered toy. Sometimes, we need to store data in a specific order, like in alphabetical order or in order of importance. But it would take a lot of time to constantly rearrange the data to be in the right order.

So, we can create a "preordered field," which means we set up the rules for how the data should be sorted before we even start entering it. This way, the data will automatically be organized the right way as soon as it's entered into the field, kind of like how the store automatically sets aside preordered toys before they even arrive in the store.

This makes it much easier and faster to find and use the data in the order we need it, instead of having to manually sort it every time we use it.