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Entity relationship model with example

Anonymous

∙ 16y ago

Updated: 9/15/2023

draw an er diagram on attendance management system

Wiki User

∙ 16y ago

What else can I help you with?

Full form of eer model?

ENHANCED ENTITY RELATIONSHIP OR EXTENDED ENTITY RELATIONSHIP

Entity-relationship model of hospital mis?

entity relation model for hospital database

Entity-relationship model for online shopping websites?

yes

What is the Enhanced Entity Relationship Model?

is called specialization and generalization.

What are the advantages and disadvantages of Entity Relationship Diagrams?

Entity-Relationship diagrams are useful for modelling data and the relationships between the data. They can be used when the constraints between data are relatively simple. They do not allow specification of interactions between the data or model how the data changes (there are no processes in Entity-Relationship). Entity-Relationship diagrams are most often used to model databases.

What are the Advantages and disadvantages of Entity Relationship Model?

Entity-relationship model advantages and disadvantages AdvantagesDisadvantagesConceptual simplicityVisual representationEffective communicationIntegration with the relational database modelLimited constraint representationLimited relationship representationNo representation of data manipulationLoss of information

Which are the Different symbols used in entity relationship model?

mandatory and optional

What is the advantages of entity relationship model?

AdvantagesConceptual simplicityVisual representationEffective communicationIntegration with the relational database model

What is total participation in database management?

Participation (or optionality) concerns the involvement of entities i a relationship. Participation is about exceptions to the rule. An entity's participation is optional if there is a least one instance of an entity which does not participate in the relationship. An entity participation is mandatory if all instances of an entity must participate in the relationship.

What is er model in dbms?

In software engineering, an Entity - Relationship model(ER model for short) is an abstract and conceptual representation of data. Entity-relationship modeling is a database modeling method, used to produce a type of conceptual schema or semantic data model of a system, often a relational database, and its requirements in a top-down fashion. Diagrams created by this process are called entity-relationship diagrams or ER diagrams.learn more www.ngprakasam.hpage.com

Explain entity relationship model with suitable example?

An entity relationship model is a visual representation of the relationships between entities in a database. For example, in a university database, you could have entities such as "Student," "Course," and "Instructor," with relationships like "Student enrolls in Course" and "Instructor teaches Course." These relationships are represented by lines connecting the entities in a diagram, showing how they are connected and interact with each other.

Entity-relationship model retaurent management?

er daigram and dfd retaurent management?

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