def METHOD_NAME():
    """Insert data into DB"""
    data_bundle_dir = Path(
        ".",
        "data_bundle_egon_data",
        "re_potential_areas",
    )
    dataset = egon.data.config.settings()["egon-data"]["--dataset-boundary"]
    if dataset == "Everything":
        map_section = "path_table_map"
    elif dataset == "Schleswig-Holstein":
        map_section = "path_table_map_testmode"
    else:
        raise ValueError(f"'{dataset}' is not a valid dataset boundary.")
    data_config = egon.data.config.datasets()
    pa_config = data_config["re_potential_areas"]
    file_table_map = {
        data_bundle_dir / Path(file).name: table
        for file, table in pa_config["target"][map_section].items()
    }
    engine = db.engine()
    for file, table in file_table_map.items():
        data = gpd.read_file(file).to_crs("EPSG:3035")
        data.rename(columns={"geometry": "geom"}, inplace=True)
        data.set_geometry("geom", inplace=True)
        schema = pa_config["target"].get("schema", "supply")
        # create database table from geopandas dataframe
        data[["id", "geom"]].to_postgis(
            table,
            engine,
            schema=schema,
            index=False,
            if_exists="append",
            dtype={"geom": Geometry()},
        )