Data SourcesPolypheny currently supports the following data source adapters:CSV Adapter — An adapter for querying CSV files.Ethereum Adapter — A data source adapter for querying the Ethereum blockchain.MariaDB / MySQL Adapter — Data source adapter for the relational database systems MariaDB and MySQL..MonetDB Adapter — Allows querying and modifying tables on a remote MonetDB instance.PostgreSQL Adapter — Allows querying and modifying tables on a remote PostgreSQL database.Query File System (QFS) — Maps a filesystem path as relational table and allows querying it.Currently work-in-progress:DruidElasticsearchGeode