Functional Dependency in DBMS
Functional Dependency in DBMS Functional Dependency is also known as “FDs” or a relationship. A relationship:- An attribute can determine other attributes functionally. The first attribute does not use for computing or calculating the value of the second attribute but it searches the value of the tuple corresponding to the first a…
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Inference Rule (IR) in DBMS
Inference Rule (IR) in DBMS: Armstrong's axioms in database management systems were developed by William w. Armstrong in 1974. Armstrong's axioms are the basic inference rule, used to conclude functional dependencies on a relational database. It provides a set of rules for a simple reasoning technique in functio…
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Normalization in DBMS
Normalization in DBMS Normalization is the process or rules for minimizing data redundancy (duplicates or repetition) in relation or set of relations. It divides larger tables into smaller tables and links or connects them by relationships. Redundancy creates the cause of insertion, deletion, and update anomalies. • Insert anomalies − Insert data in a r…
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