Database Redesign
Which of the following modifications may not succeed?

Changing a column data type from char to date
Changing a column data type from numeric to char
Neither of the above actions will succeed
Both of the above actions should succeed

ANSWER DOWNLOAD EXAMIANS APP

Database Redesign
Changing cardinalities in a database is:

a rare database design task, but does occur.
is impossible to do, so a new database must be constructed and the data moved into it.
a common database design task.
a database design task that never occurs.

ANSWER DOWNLOAD EXAMIANS APP