Changing cardinalities in a database is:
A. a common database design task.
B. a rare database design task, but does occur.
C. a database design task that never occurs.
D. is impossible to do, so a new database must be constructed and the data moved into it.
Answer: Option A
A. dependency graph.
B. data model.
C. graphical display.
D. None of the above is correct.