Design Element: Chen
for Entity Relationship Diagram - ERD

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Entity-relationship diagrams (ERDs) are intended for the development of data models and provide a standard method for determining data and relationships between them. The first notation for ERD was introduced by Chen and has been further developed by Barker.

Chen notation provides a rich set of data modeling tools, including essentially the ERD, as well as the attribute diagrams and decomposition charts. These diagram techniques are used primarily for designing relational databases.

The entity is a set of instances of real or abstract objects (people, events, conditions, ideas, items, etc.) that have common attributes or characteristics. Any system object can be represented by only one entity, that must to be uniquely identified. In this case the entity name must reflect the type or class of the object, not a specific instance. The relationship in the most general form represents a link between two or more entities.

In other words, the entities are the basic types of information stored in the database, and the relationships show how these types of data are interrelated with each other.

Entity-Relationship Diagram (ERD) solution from Software Development area of ConceptDraw Solution Park provides the libraries with predesigned set of ERD diagram design element Chen corresponding entities and relationships.

Example 1. Design Elements — Chen's (Mac OS X, Windows) for Entity Relationship Diagrams

As well as two libraries of vector stencils with entity relationship symbols, the Entity-Relationship Diagram (ERD) solution provides entity relationship diagram samples, examples, and templates. All they you can find at ConceptDraw Solution Browser and use as the base for your own ER Diagrams.

Entity-Relationship Diagrams - Chen Notation

Example 2. Entity-Relationship Diagrams - Chen Notation

The samples you see on this page were created in ConceptDraw PRO software using the Entity-Relationship Diagram (ERD) solution and show the ER Diagrams created with Chen notation. An experienced user spent 10 minutes creating these samples.

Use the Entity-Relationship Diagram (ERD) Solution for ConceptDraw PRO to create quick and easy your own ERDs using the Chen and Crow's Foot notations.

All source documents are vector graphic documents. They are available for reviewing, modifying, or converting to a variety of formats (PDF file, MS PowerPoint, MS Visio XML, and many other graphic formats) from the ConceptDraw Solution Browser v3. The Entity-Relationship Diagram (ERD) Solution is available for all ConceptDraw PRO v9.5 or later users.

Use Product:

  • Software Development Tool
  • Diagram Software
  • Technical Diagramming Tool
  • Business Diagramming Tool
  • Professional Business Graphics Tool
  • ERD Diagrams Software
  • Cross Platform Compatibility
  • ConceptDraw PRO native Mac app
  • Easier to use than Microsoft Visio® and more powerful
  • With free support and thousands of templates

Use Solution:

Entity-Relationship Diagram (ERD)
  • Describing a database
  • Illustrate the logical structure of databases
  • Chen's notation
  • Crow’s Foot notation
  • Quick-Start ERD templates and samples
  • Entity Relationship Diagram examples
  • ERD vector elements
  • Import/Export Microsoft Visio™
  • Export to graphics files and PDF
  • Export to PPT™
  • Make Presentation

See also samples:

Compatibility: Apple® OS X 10.10 or later
Microsoft® Windows® 7/8.1/10

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