Why in Wix and Corvid documentations everything stars with database?

Maybe I am wrong but, for a while that I am trying to learn Wix and coding in Corvid, almost all of the examples that are provided in the ‘reference’ part of the Corvid documentation is about functions that are executed directly on collection or dataset.
The issue that made me to write this text is the relationship between dataset, repeater and pagination bar. Thanks to Wix, making these three to work in harmony is super easy as long as your repeater shows whatever is in a given collection. But when it comes to making a query, or filter and then trying to show the results on the repeater and use pagination bar to navigate through different pages of query results, there is no documentation at all about this. I think this is true for most of the documentation. Again, maybe I am wrong on this; and please let me know if it is not. But, wouldn’t that be much better if there were some examples that show how to use different functions with some refined database, such as query or filter results?

Hallo A YB,
already have used the Corvid-API-Reference?

https://www.wix.com/corvid/reference/

Hi russian-dima,
Yes, I am exactly talking about the issue that I think exists at the ‘Corvid-API-Reference’.

Perhaps the examples are not the best for beginners, but after a bit of time, you will understand the API reference a little bit better.
But you are right, it could be better.