# DataFusion catalog-listing
[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 with [ListingTable], an implementation
of [TableProvider] based on files in a directory (either locally or on remote
object storage such as S3).
Most projects should use the [`datafusion`] crate directly, which re-exports
this module. If you are already using the [`datafusion`] crate, there is no
reason to use this crate directly in your project as well.
[df]: https://crates.io/crates/datafusion
[df]: https://crates.io/crates/datafusion
[listingtable]: https://docs.rs/datafusion/latest/datafusion/datasource/listing/struct.ListingTable.html
[tableprovider]: https://docs.rs/datafusion/latest/datafusion/datasource/trait.TableProvider.html
[`datafusion`]: https://crates.io/crates/datafusion