Okay kiddo, let me explain spatial ETL to you. ETL stands for "Extract, Transform, Load." It's a process where we take data from one place, change it around, and then put it somewhere else.
The "spatial" part means that the data has to do with geography or maps. So, let's say we have a bunch of information about cities and countries around the world. We want to put that information on a map, so we can see where everything is.
The first step is to extract the data from where it is stored, like a database or a spreadsheet. Then, we have to transform the data so that it can be used on the map. This might mean changing the format of the data or adding new information to it.
For example, we might have the latitude and longitude of each city, but we need to turn that into a point on the map. Or, we might have different names for countries in different languages, so we need to choose one standard name to use on the map.
Finally, we load the transformed data into the map. This means putting each city in the right place on the map, and making sure all the information is displayed properly.
So, that's spatial ETL in a nutshell – taking data about geography, transforming it to work on a map, and then putting it on that map. Do you have any questions?