Question 1 :
A file data source is one that is local to a single computer.
Question 2 :
An application that uses the ODBC interface could process any database that is ODBC-compliant without any program coding changes.
Question 3 :
An OLE DB rowset is equivalent to a cursor.
Question 4 :
ODBC is a foundation of data access in the specifically Microsoft world.
Question 5 :
An abstraction is a generalization of something.