# DataFusion Physical Plan [DataFusion][df] is an extensible query execution framework, written in Rust, that uses Apache Arrow as its in-memory format. This crate is a submodule of DataFusion that contains the `ExecutionPlan` trait and the various implementations of that trait for built in operators such as filters, projections, joins, aggregations, etc. [df]: https://crates.io/crates/datafusion