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Most of the time, modification anomalies cause problems that are severe enough that a table should be normalized into BCNF.

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More Questions from Database Design Using Normalization

We use the SQL construct COUNT(*) to count the number of rows in a table.
One common design problem when designing a database from existing data is the use of a single cell in one column to store multiple values of an attribute.
One common design problem when designing a database from existing data is the presence of missing values, called blank values, in received data.
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We can eliminate modification anomalies with proper normalization that results in tables in BCNF.
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