Dataloader use for integration ( Insert,Upsert,Delete and Export ) data from external machine ( file should be an CSV ).
7 ways( function buttons ) :-
Insert :- Inserting data from external machine
Update :- Updating existing record
Upsert :- Insert and update record
Delete :- Deleting data ( recoverable )
Hard delete :- Deleting ( not recoverable )
Export : Taking out the data from our Salesforce.com
Export all :- All data extraction
7 ways( function buttons ) :-
Insert :- Inserting data from external machine
Update :- Updating existing record
Upsert :- Insert and update record
Delete :- Deleting data ( recoverable )
Hard delete :- Deleting ( not recoverable )
Export : Taking out the data from our Salesforce.com
Export all :- All data extraction