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  1. Learn what normalization is and why it is important for database design. Understand the different normal forms (1NF, 2NF, 3NF, BCNF, 4NF, 5NF) and their advantages and disadvantages with examples.

  2. Sep 11, 2024 · Learn how to organize a database schema without data redundancy using normal forms. See examples of 1NF, 2NF, 3NF, BCNF and decomposition with functional dependencies.

    • First Normal Form (1NF) For a table to be in the First Normal Form, it should follow the following 4 rules: It should only have single(atomic) valued attributes/columns.
    • Second Normal Form (2NF) For a table to be in the Second Normal Form, It should be in the First Normal form. And, it should not have Partial Dependency.
    • Third Normal Form (3NF) A table is said to be in the Third Normal Form when, It satisfies the First Normal Form and the Second Normal form. And, it doesn't have Transitive Dependency.
    • Boyce-Codd Normal Form (BCNF) Boyce and Codd Normal Form is a higher version of the Third Normal Form. This form deals with a certain type of anomaly that is not handled by 3NF.
    • Database Normalization With Examples. Database Normalization Example can be easily understood with the help of a case study. Assume, a video library maintains a database of movies rented out.
    • BCNF (Boyce-Codd Normal Form)
    • 4NF (Fourth Normal Form) Rules. If no database table instance contains two or more, independent and multivalued data describing the relevant entity, then it is in 4 Normal Form.
    • 5NF (Fifth Normal Form) Rules. A table is in 5 Normal Form only if it is in 4NF and it cannot be decomposed into any number of smaller tables without loss of data.
  3. Jul 23, 2024 · Learn how to normalize database tables to reduce redundancy and improve data quality. Understand the definitions, examples, and advantages of 1NF, 2NF, 3NF, BCNF, 4NF, and 5NF.

    • 20 min
  4. May 28, 2024 · Learn how to organize and structure relational databases using normalization, a process that eliminates data redundancy and improves data integrity. Explore the different normalization levels (1NF to 5NF) and see real-world examples with SQL code.

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  6. Learn what database normalization is and why it is important for designing optimal schemas. See how to apply 1NF, 2NF, 3NF, and BCNF with examples and key concepts.

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