Hi
can use instant reading to writing . ExternalDataSource for SQL
Can you please suggest a detailed document for all to use.

Hello, ercan aycan!

Unfortunately we don't have a complete document available right now. Please, see following topics:
How to use External Data Sources like Catalog?
Tabular Section, ValueTable, FormDataCollection Vs SpreadSheetDocument
Import data for testing purpose
Problem with configuration of ODBC-Connection

If you will have questions, please do not hesitate to ask.