Subschema can be used to
A.
create very different, personalized views of the samedata
B.
present information in different formats
C.
hide sensitive informationby omitting fields from thesub¬schema's description
D.
All of theabove
E.
None of the above
A.
create very different, personalized views of the samedata
B.
present information in different formats
C.
hide sensitive informationby omitting fields from thesub¬schema's description
D.
All of theabove
E.
None of the above