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Normalization
Normalization in SQL Server 2008 refers to the process of organizing data in a database so that it is consistent, accurate, and efficient to access. The goal of normalization is to minimize data redundancy and avoid data anomalies, such as data insertion, update, and deletion anomalies.
There are several levels of normalization, typically represented by different normal forms (NFs). The most commonly used normal forms are first normal form (1NF), second normal form (2NF), and third normal form (3NF).
In 1NF, data is organized into tables with each column containing atomic (indivisible) values. In 2NF, the table is in 1NF and all non-key columns are dependent on the primary key. In 3NF, the table is in 2NF and all non-key columns are independent of each other.
Normalization is achieved by splitting large tables into smaller tables and defining relationships between them. This process can help to reduce data redundancy and ensure that data is consistent and accurate. However, it can also make queries more complex and reduce performance, so it’s important to strike a balance between normalization and performance.
Overall, normalization is an essential concept in database design and is crucial for creating efficient, scalable, and maintainable databases.
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