Hi @tonsky, I saw that re-posh’s TODO example attaches a :app/type attribute to the entity. I had the same doubt as @eslachance, so I was wondering if that is a good way to have some kind of distinction of the kind (table) of the entity.

Actually what I think I'd like is... some examples of this. tbh I'm not sure it will work for me, I can accept that datascript might not be the right store for me.

Did you see this https://github.com/denistakeda/re-posh/blob/master/examples/todomvc/src/cljs/todomvc/db.cljs ? It might help.

Hmm. I'll have to study that a bit!

You will see that is quite simple and what Tonsky said about everything being an entity hopefully will make sense 🙂

yes, you can maintain :app/type attr for every entity to be sure which is which. In practice, though, I found that it’s rarely needed

Cool, thank you. If I don’t use the :app/type attr, but I want to query all artists, how could I do that? In DataScript/Datomic we define ‘meaning’ to attrs, is that right? So we can share attrs among entities and it means that some other entity could use the :artist/name attr. If I query for entities with that attribute I will get other entities that are not of the ‘artist type’, right?

Is it right to think that for that to work I would have to attach an :app/type attr to artist so I can guarantee that I only get entities of that ‘type’?

kind of

usually there’s an attribute that’s unique to the entity though. Like :artist/id or smth. You can mix attrs between entities but it’s more like an exception than a commonplace practice

Right, I see. Thank you very much, Tonsky!