Answer:
The error could let people through who really shouldn't be through
Answer:to add a column to existing table.
to rename any existing column.
to change datatype of any column or to modify its size.
to drop a column from the table.
Explanation:
hope this help
Nope. You're on your own to find them and fix them. This why testing is so important, otherwise they won't show up until the customer finds them and that's embarrasing.
