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Difference Between Specialization and Aggregation in DBMS

Last Updated: 23 July 2025

Specialization and Aggregation in Database Management Systems are the Enhanced Entity Relationship Diagrams also known as (EER-Diagrams). Specialization and Aggregation in...read more

Advantages and Disadvantages of an ER-Model

Last Updated: 23 July 2025

Pre-requisites: ER ModelEntity is a thing or an object in real world. As the name suggests that Entity Relationship model uses collection of basic objects called entities ...read more

Last Updated: 14 January 2026

In database management, cardinality represents the number of times an entity of an entity set participates in a relationship set. Or we can say that the cardinality of a r...read more

ER diagram of Library Management System

Last Updated: 15 July 2025

ER Diagram is known as Entity-Relationship Diagram, it is used to analyze the structure of the Database. It shows relationships between entities and their attributes. An ...read more

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DBMS-ER model

Library Management System

ER Diagram of a Company

Last Updated: 15 July 2025

ER Diagram is known as Entity-Relationship Diagram, it is used to analyze to structure of the Database. It shows relationships between entities and their attributes. An ER...read more

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DBMS

DBMS-ER model

Difference Between Stored and Derived Attribute

Last Updated: 15 July 2025

While using databases, there is always a clear difference between stored and derived attributes, and this makes the work of managing the data easier. Stored attributes are...read more

ER diagram of Bank Management System

Last Updated: 15 July 2025

ER diagram is known as Entity-Relationship diagram. It is used to analyze to structure of the Database. It shows relationships between entities and their attributes. An ER...read more

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DBMS

DBMS-ER model

Relationships in ER model

Last Updated: 15 July 2025

Entity Relationship model (ER model) contains entities and relationships. ER model enables us to know how these entities are associated with each other. Entities interact ...read more

Structural Constraints of Relationships in ER Model

Last Updated: 15 July 2025

Structural constraints, within the context of Entity-Relationship (ER) modeling, specify and determine how the entities take part in the relationships and this gives an ou...read more

Last Updated: 01 December 2025

A Data Model in Database Management System (DBMS) is the concept of tools that are developed to summarize the description of the database.Data Models provide us with a tra...read more

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DBMS

GATE CS

DBMS-Relational Model

DBMS-ER model

Difference between ER Model and RDBMS

Last Updated: 12 July 2025

1. ER (Entity- Relationship) Model :ER model stands for entity relationship model. It specifies the structure of a database by giving the relationship between the entities...read more

Weak Entity Set in ER diagrams

Last Updated: 27 October 2025

An entity type should have a key attribute which uniquely identifies each entity in the entity set, but there exists some entity type for which key attribute can’t be defi...read more

Attributes to Relationships in ER Model

Last Updated: 19 August 2019

In ER model, entities have attributes which can be of various types like single-valued, multi-valued, composite, simple, stored, derived and complex. But relationships can...read more

How to Solve Relational Algebra Problems for GATE

Last Updated: 07 November 2024

Relational Algebra is fundamental or necessary for GATE computer science preparation. It is also an important section of the Database Management System (DBMS). Relational ...read more

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DBMS

GATE CS

DBMS-Relational Algebra

DBMS-ER model

Mapping from ER Model to Relational Model

Last Updated: 24 April 2026

Converting an Entity-Relationship (ER) diagram to a Relational Model is an important step in database design. The ER model represents the conceptual structure of a databas...read more

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DBMS-Relational Model

DBMS-ER model

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