A decomposition in which the database integrity constraints can be enforced using constraints on individual component database relations, without computing their relational join.
A decomposition of a relational schema whose component relational projections always reconstruct the original database relation by natural join, without extra database tuples.
A relational schema is in fourth normal form if the determinant of every non-trivial multivalued dependency is a superkey. This implies Boyce-Codd normal form because every functional dependency implies a multivalued dependency.
A relational schema is in Boyce-Codd normal form if the determinant of every non-trivial functional dependency is a superkey.
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Database normalization is a systematic approach used in designing relational databases to minimize data redundancy and ensure data integrity. The primary goal is to organize the data within the database efficiently, reducing the chances of anomalies during insertions, updates, and deletions. Normalization typically involves dividing a database into two or more tables and defining relationships between the tables. The process is often conducted in stages, referred to as "normal forms," each with specific rules and criteria that must be met.