Database Redesign
What SQL command can be used to add columns to a table?

ALTER TABLE TableName ADD COLUMN ColumnName
MODIFY TABLE TableName ADD COLUMN ColumnName
MODIFY TABLE TableName ADD ColumnName
ALTER TABLE TableName ADD ColumnName

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Database Redesign
Changing cardinalities in a database is:

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

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