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DIAGRAM 15

Entity Relationship Diagram - ERD - Software for Design
Chen ER Diagrams

One of the methods actively used in a real design of database structure is semantic modeling, which is a modeling of the data structure, based on the meaning of these data. Various types of ER diagrams are used as the tool of semantic modeling.

The first version of the entity-relationship model was proposed in 1976 by Peter Chen. In the future, many authors have developed their own versions of these models (Martin notation, IDEF1X notation, Barker notation, etc.). Irrespective from the notation, all versions of Entity-relationship diagrams are based on the same idea - image is always more visual than text description. ER diagrams use a graphical representation of the entity domain, their properties (attributes), and the relationships between entities.

The Entity-Relationship Diagram (ERD) solution from ConceptDraw Solution Park extends ConceptDraw DIAGRAM ector graphics and diagramming software with the ability to describe a database using the Entity-Relationship (Chen) model. Use it for design your ERDs and verify that ConceptDraw DIAGRAM offers the best ERD diagrams software tools for design element Chen notation.

Entity Relationship Diagram - ERD - Software for Design  <br>Chen ER Diagrams *

Example 1. Entity Relationship Diagram Software
Design Elements — Chen (Windows, Macintosh).

Entity-Relationship Diagram (ERD) solution offers the ERD Chen's Notation library with variety of ERD symbols for Chen notation. Simply drag the predesigned ERD objects from the library, arrange them, type the text and title to get the excellent result – your own ER Diagram in minutes. It’s a fastest way of drawing, and the most important – you don’t need to be the painter for this.

Entity-Relationship Diagram Solution in ConceptDraw STORE

Example 2. Entity-Relationship Diagram Solution in ConceptDraw STORE

You can also use the ready samples or templates offered by Entity-Relationship Diagram (ERD) solution in ConceptDraw STORE as the base for your own diagrams.

ER Diagram, Chen Notation

Example 3. ER Diagram, Chen Notation

The samples you see on this page were created in ConceptDraw DIAGRAM software in Mac OS X and Windows 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 DIAGRAM to create quick and easy your own Entity-Relationship Diagrams 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, and many other graphic formats) from the ConceptDraw STORE. The Entity-Relationship Diagram (ERD) Solution is available for all ConceptDraw DIAGRAM or later users.






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