# ask-community

Rubén Briones

03/15/2023, 6:13 PM
There are any community implementation for reading/saving Dataframes from/to a Postgres DDBB? Or any other SQL DDBB? Thanks!

Tim Castillo

03/15/2023, 6:59 PM
Hi Rubén! Dagster has multiple database I/O managers that you can draw inspiration from. I'll use the DuckDB one as an example: 1. Here is the raw base class you can inherit from that we use for our database I/O managers 2. Here is the DuckDB I/O manager 3. Here is the type handler that manages the data from DuckDB as a Pandas Dataframe a. If you move up the file tree a bit, you'll see type handlers for Polars and PySpark too
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