Excel Exporter and Importer
Excel Importer and Exporter
Read the following:
https://mendix.byu.edu/export-data-to-excel-document
https://mendix.byu.edu/import-data-using-excel-with-associations
Do the Following Mendix Learning Path (Only Excel Parts)
https://academy.mendix.com/link/paths/44/Importing-and-Exporting-Your-Data