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DBMS-Normalization

18 posts

Super Key in DBMS

Last Updated: 23 July 2025

Keys in DBMS play an important role in maintaining the integrity and uniqueness of data. Among these, the super key is one of the fundamental concept. It helps in designin...read more

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DBMS-Normalization

Normalization Process in DBMS

Last Updated: 15 July 2025

Database Normalization is any systematic process of organizing a database schema such that no data redundancy occurs and there is least or no anomaly while performing any ...read more

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DBMS-Normalization

Allowed Functional Dependencies (FD) in Various Normal Forms (NF)

Last Updated: 12 July 2025

Prerequisite - Functional Dependency and Attribute ClosureWe all know the following:2 NF does not allow partial dependency.3NF does not allow transitive dependency.BCNF do...read more

DBMS-Normalization

Properties of Relational Decomposition

Last Updated: 12 July 2025

When a relation in the relational model is not appropriate normal form then the decomposition of a relation is required. In a database, breaking down the table into multip...read more

DBMS-Normalization

Boyce-Codd Normal Form (BCNF)

Last Updated: 25 July 2025

Boyce-Codd Normal Form (BCNF) is an advanced version of 3NF used to reduce redundancy in databases. It ensures that for every functional dependency, the left side must be ...read more

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DBMS-Normalization

Third Normal Form (3NF)

Last Updated: 25 July 2025

The Third Normal Form (3NF) builds on the First (1NF) and Second (2NF) Normal Forms. Achieving 3NF ensures that the database structure is free of transitive dependencies, ...read more

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DBMS-Normalization

Second Normal Form (2NF)

Last Updated: 12 July 2025

Second Normal Form (2NF) is based on the concept of fully functional dependency. It is a way to organize a database table so that it reduces redundancy and ensures data co...read more

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DBMS-Normalization

First Normal Form (1NF)

Last Updated: 25 July 2025

First Normal Form (1NF) ensures that the structure of a database table is organized in a way that makes it easier to manage and query. A relation is in first normal form i...read more

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DBMS-Normalization

Domain Key Normal Form in DBMS

Last Updated: 11 July 2025

Prerequisites - Normal Forms, 4th and 5th Normal form, find the highest normal form of a relation It is basically a process in database to organize data efficiently. Basic...read more

DBMS-Normalization

Minimum Relations Satisfying First Normal Form (1NF)

Last Updated: 11 July 2025

A relation that does not contain any composite or multivalued attribute, then the relation is in its First Normal Form. Relations that contain a single-valued attribute co...read more

DBMS-Normalization

Denormalization in Databases

Last Updated: 24 July 2025

Denormalization is a database optimization technique in which we add redundant data to one or more tables. This can help us avoid costly joins in a relational database. No...read more

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DBMS-Normalization

Canonical Cover of Functional Dependencies in DBMS

Last Updated: 23 July 2025

Managing a large set of functional dependencies can result in unnecessary computational overhead. This is where the canonical cover becomes useful. A canonical cover is a ...read more

DBMS-Normalization

Lossless Join and Dependency Preserving Decomposition

Last Updated: 23 July 2025

Decomposition of a relation is done when a relation in a relational model is not in appropriate normal form. Relation R is decomposed into two or more relations if decompo...read more

DBMS-Normalization

Lossless Decomposition in DBMS

Last Updated: 26 July 2025

In DBMS, a lossless decomposition is a process of decomposing a relation schema into multiple relations in such a way that it preserves the information contained in the or...read more

DBMS-Normalization

How to find the highest normal form of a relation

Last Updated: 23 July 2025

Normalization is the process of structuring data in a database by creating tables and defining relationships between them. This ensures data consistency, protection, and i...read more

DBMS-Normalization