Database normalization

  • DBMS Normalization is a technique for designing relational database tables.
  • Tables can be normalized to varying extents. Database theory describes a table's degree of normalization in terms of normal forms of successively higher degrees of strictness.
  • A table in third normal form (3NF), for example, is consequently in second normal form (2NF) as well; but the reverse is not always the case.
  • More highly normalized tables reduce data duplication and opportunities for various kinds of logical inconsistencies that could lead to loss of integrity of the database.

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