The separation of data and application program is called ……
a) internal mapping
b) external mapping
c) conceptual mapping
d) data independence
How many types of data independence?
a) one
b) two
c) three
d) four
Explanation: physical data independence, logical data independence
The data independence that enables user to change the internal schema without changing conceptual level…….
a) physical data independence
b) logical data independence
c) conceptual independence
d) none of these
The data independence that enables user to change the conceptual schema without changing external level…….
a) physical data independence
b) logical data independence
c) conceptual independence
d) none of these
When discussing a model under construction, user speaks in term of ……. schema they work with, which database developers must translate into ……. Schema?
a) external, internal
b) external, conceptual
c) internal, implementation
d) internal, conceptual
The representation of real world objects, events, their associations is called….
a) database
b) data segment
c) data model
d) none of these
