ERD meaning in Information Technology ?

Answer: What is Entity-Relationship Diagram mean?

An entity–relationship model (or ER model) describes interrelated things of interest in a specific domain of knowledge. A basic ER model is composed of entity types (which classify the things of interest) and specifies relationships that can exist between entities (instances of those entity types).

In software engineering, an ER model is commonly formed to represent things a business needs to remember in order to perform business processes. Consequently, the ER model becomes an abstract data model, that defines a data or information structure which can be implemented in a database, typically a relational database.

Entity–relationship modeling was developed for database and design by Peter Chen and published in a 1976 paper, with variants of the idea existing previously. Some ER models show super and subtype entities connected by generalization-specialization relationships, and an ER model can be used also in the specification of domain-specific ontologies.

reference

Full Form	Category
Ecosystems Research Division	Academic & Science
Berdyansk	Airport Code
Eastern Region Dealers	Business
Erdene Resource Development Corporation	Business
Exalt Resources Limited	Business
Engineering Research Division	Business
Exchange Rate Difference	Business
Eagle Ridge Developments	Business
Ethical and Religious Directives	Community
Episcopal Relief and Development	Community
Emergency Recovery Disk	Computing
Engineering Review Diagram	Computing
Emergency Rescue Disk	Computing
Electronic Report Distribution	Computing
Event Report Discriminator	Computing
Exposed Rigid Diverter	Computing
Eclipse Resource Database	Computing
End Recovery Data	Database Management
Elastic Recoil Detection	Electronics
Prosa Entity Relationship Diagram Graphic File	File Type
Evil Rubber Duckie	General
Embraer ERJ-140 aircraft flown by American Airlines	General
Extended Reach Drilling	General
Entity Relationship Diagrams	General
Empirical relative deviation	General
Entity Recognition and Disambiguation	General
Effective Rim Diameter	General
Examine com Research Digest	General
Expanded Radial Displacement	General
Early Replication Domain	General
Earthquake Resistant Design	General
Emergency Response Diver	General
Erasmus Recruitment Days	General
Event Related Desynchronization	General
Engineering Request Document	General
Engine Radiator	General
Expected Release Date	Governmental
Environmental Radiation Data	Governmental
Environmental Research Division	Governmental
Employment Relations Division	Governmental
External Resources Division	Governmental
Environmental Resources Department	Governmental
Entity-Relationship Diagram	Information Technology
Early Renal Disease	Medical
Electronic Repeat Dispensing	Medical
Earliest Release Date	Messaging
External Requirements Document	Military and Defence
Berdyansk, Ukraine	Regional
European Report on Development	Regional
Emergency Repair Disk	Softwares
Experiment Requirements Document	Space Science