To introspect these data types as their native types, the user needs to uncheck them. When it is unchecked, values will be introspected as the actual data type in Excel and will display in TIBCO Data Virtualization as the associated data type.
A user needs to follow the below steps(Snapshot for reference)
1. Uncheck the
"Introspect with Formatted Display Values instead of Actual Values" while introspecting the resource.
2. The columns will now be displayed with their correct datatypes.