Spotfire 7.5 - Data Table LOAD ON DEMAND

Hi all, 

i have some dubts abount data table with the setting LOAD ON DEMAND from a data connection. 

Spotfire give the possibility to create a data table with both load method: IMPORT DATA and KEEP DATA EXTERNAL. 

If we use the property KEEP DATA EXTERNAL and LOAD ON DEMAND (parameter depending on the user marking), the data are maintained on DB and are filtered based on the parameter each time the marking of user change.  No data is in-memory. Is it correct?

Instead, what happens with a data table IMPORT DATA and LOAD ON DEMAND (parameter depending on the user marking)? What is brought in memory? All data of data connector?

Help me please

(1) Answer