Database

In this tutorial, we will learn about database entities and relationships. Relational databases store information about entities and how these entities are related.

In this tutorial, we will look at some popular relational databases. Some of the popular Relational Database Management Systems(RDBMS) are as follows:

An entity set is a group of entity instances of a particular entity type. For example, all employees of an organization form an entity set.

In this tutorial, we will learn about different types of attributes. An attribute describes the property of an entity. An attribute is represented as an Oval shape

In this tutorial, we will learn about different types of relationships. A diamond shape in the ER diagram represents a relationship, which shows the relationship among entities.

This tutorial is a step-by-step guide to constructing an E-R Diagram. Creating an Entity-Relationship (E-R) Diagram involves several steps aimed at modeling