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Home > Art, Film & Photography > Database Normalization: Denormalization, First Normal Form, Boyce-Codd Normal Form, Third Normal Form, Second Normal Form, Fourth Normal Form
Database Normalization: Denormalization, First Normal Form, Boyce-Codd Normal Form, Third Normal Form, Second Normal Form, Fourth Normal Form

Database Normalization: Denormalization, First Normal Form, Boyce-Codd Normal Form, Third Normal Form, Second Normal Form, Fourth Normal Form


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About the Book

Chapters: Denormalization, First Normal Form, Boyce-Codd Normal Form, Third Normal Form, Second Normal Form, Fourth Normal Form, Fifth Normal Form, Domain/key Normal Form, Sixth Normal Form, Armstrong's Axioms, Single Version of the Truth, Join Dependency, Single Source of Truth. Source: Wikipedia. Pages: 72. Not illustrated. Free updates online. Purchase includes a free trial membership in the publisher's book club where you can select from more than a million books without charge. Excerpt: In the field of relational database design, normalization is a systematic way of ensuring that a database structure is suitable for general-purpose querying and free of certain undesirable characteristicsinsertion, update, and deletion anomaliesthat could lead to a loss of data integrity. Edgar F. Codd, the inventor of the relational model, introduced the concept of normalization and what we now know as the First Normal Form (1NF) in 1970. Codd went on to define the Second Normal Form (2NF) and Third Normal Form (3NF) in 1971, and Codd and Raymond F. Boyce defined the Boyce-Codd Normal Form (BCNF) in 1974. Higher normal forms were defined by other theorists in subsequent years, the most recent being the Sixth normal form (6NF) introduced by Chris Date, Hugh Darwen, and Nikos Lorentzos in 2002. Informally, a relational database table (the computerized representation of a relation) is often described as "normalized" if it is in the Third Normal Form. Most 3NF tables are free of insertion, update, and deletion anomalies, i.e. in most cases 3NF tables adhere to BCNF, 4NF, and 5NF (but typically not 6NF). A standard piece of database design guidance is that the designer should create a fully normalized design; selective denormalization can subsequently be performed for performance reasons. However, some modeling disciplines, such as the dimensional modeling approach to data warehouse design, explicitly recommend non-normalized designs, i.e. des...More: http: //booksllc.net/?id=864


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Product Details
  • ISBN-13: 9781155892245
  • Publisher: Books LLC
  • Publisher Imprint: Books LLC
  • Height: 152 mm
  • Sub Title: Denormalization, First Normal Form, Boyce-Codd Normal Form, Third Normal Form, Second Normal Form, Fourth Normal Form
  • Width: 229 mm
  • ISBN-10: 1155892240
  • Publisher Date: 15 Sep 2010
  • Binding: Paperback
  • Spine Width: 5 mm
  • Weight: 122 gr


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