Cached data only / Offline mode using CData ADO.NET Provider for Excel

Connection string

This CData ADO.NET Provider for Excel connection string can be used for connections to Excel 97, Excel 2000, Excel 2002, Excel 2003, Excel 2007, Excel 2010 and Excel 2013.

Excel File=C:\myExcelFile.xlsx;Offline=true;Query Passthrough=true;
Cache Location

SELECT statements will always retrieve data from the cache. DELETE/UPDATE/INSERT statements is not allowed and will throw an exception.