Hi Ranjit!
It's important to note that ZDB indexes *tables*, not views. As such, ZomboDB indexes aren't really any different than standard btree indexes, except that a ZDB index generally wants to cover all columns in a table. So in general, whatever strategies you might use for joining tables and creating views all apply with ZDB.
If you're struggling with something specific, I'd appreciate some SQL that demonstrates what you're trying to do. With that, I can probably provide more detailed information.
eric