MACHINE DESIGN QUIZ

False

True

All of these

clearly understand the current structure and contents of the database only.

test any changes on a test database only.

create a complete backup of the operational database only.

None of these

a logical model.

a conceptual model.

an internal model.

True

False

database has no data.

database is well-designed.

database is structured.

database is relatively small.

False

True

Changing a column data type from char to date

Both of the above actions should succeed

Neither of the above actions will succeed

Changing a column data type from numeric to char

True

False

False

True

False

True