Question - What are logical databases?
Answer -
1: -
insert' will add a new record or a new row into the database table.
'Update' will modify a record in the DB table.
'Modify' it is a combination of both insert and update...
2: -
INSERT - Add a new record into the database table.
MODIFY - If record is available it modifies otherwise it wont modify.
UPDATE - If record is available its update the record otherwise it creates a new record.