Database Redesign
Database redesign is not terribly difficult if the:

database is well-designed.
database is structured.
database has no data.
database is relatively small.

ANSWER DOWNLOAD EXAMIANS APP

Database Redesign
Before any changes to database structure are attempted one should first:

test any changes on a test database only.
clearly understand the current structure and contents of the database only.
All of these
create a complete backup of the operational database only.

ANSWER DOWNLOAD EXAMIANS APP