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DBMS-ER model

17 posts

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

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Weak Entity Set in ER diagrams

Last Updated: 28 December 2024

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

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Difference between ER Model and RDBMS

Last Updated: 03 May 2020

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

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Difference Between

Data Models in DBMS

Last Updated: 13 January 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-Relational Model

Relationships in ER model

Last Updated: 12 June 2020

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

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Structural Constraints of Relationships in ER Model

Last Updated: 04 April 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

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ER diagram of Bank Management System

Last Updated: 20 September 2021

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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Difference Between Stored and Derived Attribute

Last Updated: 13 September 2024

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

Difference Between

ER Diagram of a Company

Last Updated: 02 July 2024

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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ER diagram of Library Management System

Last Updated: 19 January 2024

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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Library Management System

Cardinality in DBMS

Last Updated: 27 December 2024

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

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Computer Science Fundamentals

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Advantages and Disadvantages of an ER-Model

Last Updated: 09 May 2023

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

Difference Between Specialization and Aggregation in DBMS

Last Updated: 11 September 2024

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

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Mapping from ER Model to Relational Model

Last Updated: 24 September 2024

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

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DBMS-Relational Model

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-Relational Algebra