Second Normal Form (2NF) is a database normalization concept that aims to reduce data redundancy and improve data integrity. A table is in 2NF if it is already in the First Normal Form (1NF) and all non-key attributes are fully functionally dependent on the entire primary key. This means that no non-key attribute should depend on just a part of a composite primary key. To achieve 2NF, any partial dependencies must be removed by creating separate tables. This process helps ensure that each piece of data is stored only once, making it easier to maintain and update. By organizing data in this way, databases become more efficient and less prone to anomalies during data operations.