Prerequisite ************ To access the data in the Data Catalog or work with Data Flow, there are a number of steps that need to be completed. To configure Data Flow you will need to: .. include:: ../_template/prerequisite/data_flow.rst * The ``core-site.xml`` file needs to be :ref:`configured`. To configure Data Catalog you will need to: .. include:: ../_template/prerequisite/data_catalog.rst * The ``spark-defaults.conf`` file needs to be :ref:`configured`.