Entity Relationship Software
Entity Relationship Diagram
ERD is a major data modelling tool which can help to organize your project's data into the entities and to define the relashionships between these entities.
It is convenient to design ER Diagrams using ConceptDraw DIAGRAM diagramming and vector drawing software extended with the Entity-Relationship Diagram (ERD) Solution from the Software Development Area for ConceptDraw Solution Park. This solution supports Chen's and Crow’s Foot notations that are often used to describe database structure.
In a Chen's notation, entities are represented by rectangles with the entities names inside and relationships are represented by diamonds. The attributes are drawn as ovals and are connected with a line to exactly one entity or relationship set.
Example 1. Entity Relationship Software. Chen's notation
Another type of notation is known as Crow's Foot notation. Fundamentally it is very similar to Chen's notation and differs by designations, are used the boxes to represent entities and the lines between them to represent relationships. The attributes of entity are drawn in the box that represents this entity.
Example 2. Entity Relationship Software. Crow's Foot notation
The Entity-Relationship Diagram (ERD) solution provides templates and samples that allow you get closer with ER diagrams. All they are available for viewing and editing from ConceptDraw STORE.
Example 3. Entity-Relationship Diagram (ERD) Solution in ConceptDraw STORE
Entity relationship diagram (ERD) Libraries
There are also 2 libraries at the Entity-Relationship Diagram (ERD) solution with all necessary objects to produce your own ER diagram. You can simply drop desired of them into your document to quickly and easily create the diagram.
Example 4. ERD Libraries
The Entity-Relationship Diagram (ERD) solution for ConceptDraw DIAGRAM helps you to produce the ER Diagrams that you can readily use to document databases in white papers, presentations, data sheets, posters, and technical materials.
Examples of Entity relationship diagram (ERD)
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 model and offers a lot of examples that you can successfully use as the base for your own ERDs.
Example 5. Entity Relationship Diagram (ERD) Example - ERD Employee Certification Entity
Use ConceptDraw DIAGRAM software extended with Entity-Relationship Diagram (ERD) solution to draw your own ER diagrams using Chen's or Crow's foot notations without efforts.
Example 6. Entity Relationship Software (Mac OS X and Windows)
The following features make ConceptDraw DIAGRAM extended with the Entity-Relationship Diagram (ERD) solution the most effective Entity Relationship Software:
- You don't need to be an artist to draw professional looking diagrams in a few minutes.
- Large quantity of ready-to-use vector objects makes drawing your diagrams quick and easy.
- Extensive collection of pre-designed templates and samples give you a great start for your own diagrams.
- ConceptDraw DIAGRAM provides you with the possibility to use the grid, rules and guides. You can easily rotate, group, align, and arrange objects, and use different fonts and colors to make your diagram stand out.
- All ConceptDraw DIAGRAM documents are vector graphic files and are available for reviewing, modifying, and converting to a variety of formats: image, HTML, PDF file, MS PowerPoint Presentation, Adobe Flash, MS Visio.
- Using ConceptDraw STORE you can navigate through ConceptDraw Solution Park, managing downloads and updates. You can access libraries, templates and samples directly from ConceptDraw STORE.
- If you have any questions, our support is free of charge and always ready to come to your aid.
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The first thing that usually comes to mind when talking about database models is ER-diagrams, and the ways to create them. The second most recognizable notation is the Crow’s Foot, which visually differs from Chen’s notation. Actually, it doesn’t matter which notation you’ll use for your entity relationship diagram (ERD), but the content is what matters.
When designing an Entity-Relationship Diagram one need to use a certain notated symbols that were developed and standardized especially for databases description. First of them - the Chen’s notation had a linguistic origin. It includes rectangle boxes to show entities that may be described as nouns, and the relationships between them described as verbs depicted in a form of diamond. Finally the Chen’s notation was simplified up to the Crow’s Foot notation. It represents a relationship as labeled line. It is precisely this notation is shown in the given figure. ConceptDraw DIAGRAM together with its Entity-Relationship Diagram (ERD) solution is designed to support professionals who deals with creating ER diagrams using the element of both - Chen’s and Crow's Foot notations.
Picture: Design Element: Crows Foot for Entity Relationship Diagram - ERD
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The best ERD tool for the Mac and Windows is ConceptDraw DIAGRAM software extended with the Entity-Relationship Diagram (ERD) solution from the Software Development Area for ConceptDraw Solution Park, which is sharpened for professional ERD drawing and data modeling with Entity Relationship Diagram.
Picture: Data Modeling with Entity Relationship Diagram
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Database model is a graphic representation need at the beginning of project development. You won't have any problems with drawing ER diagrams on a Mac anymore with ConceptDraw DIAGRAM application. Special libraries that contain all the symbols of both Chen's and Crow’s foot notation allow you to start database modeling within a few minutes.
Creating entity-relationship diagrams on Mac is fun and effortless when you use a software designed for professional ERD drawing tailored to specific characteristics of Apple OS X. ConceptDraw DIAGRAM is a business diagramming software for those using OS X.
The Entity-Relationship Diagrams solution for ConceptDraw has 2 libraries containing about 50 vector icons, depicting ERD symbols of the most popular Chen's and Crow’s Foot Notations. The other valuable component of the solution is a collection of ERDs samples and templates that can be opened on Macs and PCs.
Picture: Drawing ER diagrams on a Mac
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