- Here's where we left off. We realized that having all three
entities in one table led to update, insert and delete anomalies.
- We recognized the problem: three entities in one table — but threw out
the bad schema and started over with the E/R model.
- Now we will examine a different approach, based on improving a bad schema.
- Artist info is obviously (highly) redundant.
- This is because of a one-to-many relationship between Artist and Album.
- Separate the Album columns into their own table.