Does ERD count as UML diagrams?

Question

Are entity relationship diagrams (ERDs) considered a UML diagram type or are they a separate thing?

Answer 1

I have another idea. I think we should look deep.

When we talk about ERD (Entity Relationship Diagram), we are talking about Modeling Entity Relationships .

This is firstly introduced by Peter Chen (1976). He has two well-known articles on modeling entity relationships (see the first and second articles)

He talked about modeling entity relationships ( not a diagram of entity relationships ). This is an ER Model .

1975 .

ER (. , ):

ER , , . , ER , , .

ER Modeling, .

• Chen Notation ( )
• IDEF1X
• Bechman
• (min, max) -notation - 1974
• UML

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ER .

UML ER . .

: UML - . UML ( ) ER ER- ERD. : ERD UML.

Answer 2

ERD - . UML. PDF .

UML - / - . ERD - ( ). UML , , .

UML-:

Answer 3

This was the first Google search:

Key differences: UML stands for Unified Modeling Language. ERD stands for entity relationship diagram. UML is a popular and standardized modeling language that is mainly used for object-oriented software. Entity-Relationship schemes are used in structured analysis and conceptual modeling.