In order to use a DBMS, it is important to understand:
A. the physical schema
B. all subschemas that the system supports
C. one subschema
1
Only A
2
Only B
3
Only C
4
Both A and B
In order to use a DBMS, it is important to understand:
A. the physical schema
B. all subschemas that the system supports
C. one subschema