I'm a beginner in Openstreetmap, and I have some questions I didn't find answer yet.
I created my own server tile through this tutorial: https://switch2osm.org/serving-tiles/manually-building-a-tile-server-14-04/
Now, I need to do some queries locally, but I noticed that overpass api have a installation, and in its tutorial has the following description: http://wiki.openstreetmap.org/wiki/Overpass_API/Installation
NOTE: You do not need a database engine (e.g. MySQL or PostgreSQL); the database back-end is included in the OSM3S package.
So, I have my own server tile running, do I need run this full installation? Or is there a way to I use overpass search from my Postgres (postgis) database?
I'm little confused because it has its own database (overpass)(?) according to main description.
In summary: Make it some sense I run queries from my own tile server database, or I need install overpass database and run queries on overpass api database and so plot on my tile server?
If it is possible, someone has some tutorial to indicate me?