Question: Changing cardinalities in a database is:
Options
A : a common database design task.
B : a rare database design task, but does occur.
C : a database design task that never occurs.
D : is impossible to do, so a new database must be constructed and the data moved into it.
Database Redesign - General Questions more questions
Which of the following modifications may not succeed?
How can you find rows that do not match some....
A regular subquery can be processed:
What SQL command can be used to add columns to....
The EXISTS keyword will be true if:
The NOT EXISTS keyword will be true if:
The data model that is produced from reverse engineering is:
To drop a column that is used as a foreign....
What SQL command will allow you to change the table....
Which is not true of a correlated subquery?
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