Explain the concept of partial dependency and its relevance in normalization.

  • Partial dependency is a situation where a non-key attribute depends on a subset of the primary key.
  • Partial dependency is when a non-key attribute depends on the entire primary key.
  • Partial dependency occurs when an attribute depends on only a part of the primary key.
  • Partial dependency refers to a scenario where an attribute depends on another attribute that is not part of the primary key.
Partial dependency is a concept in database normalization where an attribute is functionally dependent on only a part of a composite primary key. In other words, it occurs when a non-key attribute depends on a subset of the primary key rather than the entire primary key. This can lead to data redundancy and anomalies in the database. By identifying and eliminating partial dependencies through normalization techniques like second normal form (2NF) and third normal form (3NF), databases can be structured more efficiently, reducing redundancy and ensuring data integrity.
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