Multivalued dependency is a specific instance of a join dependency. When a table contains many independent multivalued properties, the condition known as multivalued dependency arises
What is multivalued dependency and what does it look like?
- When a table contains many independent multivalued properties, the condition known as multivalued dependency arises. As an illustration: Consider a bike manufacturer that annually manufactures each model in two colors (black and white). Bike model, year of manufacture, and color.
- With only two sets of values involved, or a binary join dependency, a multivalued dependency is a specific instance of a join dependency.
- Multiple rows in a table are referred to as having an MVD, or multivalued dependency. As a result, it suggests that there are numerous other rows present in the same table.
- A multivalued dependency would therefore prohibit the 4NF. Any multivalued dependency would at the very least involve three table characteristics.
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