Entity Relationship Diagram Examples
Crow’s Foot and Chen's notation examples
Creating the entity-relationship (ER) model by visually representing the structure of some database, mainly the business one, which data equates to its entities (or objects) that are connected by relationships showing requirements and dependencies, you need proper software to provide you with the symbols necessary in this case.
ConceptDraw DIAGRAM мector drawing and diagramming software allows you to make any of needed models, plans, charts, diagrams with help of our application STORE where lots of layouts can be found as well as samples and templates of the flowcharts depending on the business sphere you work in and requirements you have. You can also find examples of ERD in Solutions here on this site in order to make it look really smart. Making entity-relationship diagram based on the Chen ERD notation is simple now having ConceptDraw DIAGRAM and you can check it yourself once you download and use it. Advice your colleagues and your friends, business partners, in order to simplify their lives as well as yours making the charts looking professional and simply sophisticated. Because we guarantee the quality of our great software developed to please everyone who needs this product in their work.
Example 1. ERD Example — Chen Diagram
This sample diagram is one of ER Diagram examples included to Entity-Relationship Diagram (ERD) solution. It shows the type of icons and graphics you can use to develop a model of a database of arbitrary complexity according to Chen's notation.
Example 2. ERD Example — Crows's Foot diagram
This sample diagram was created using the drawing tools of Entity-Relationship Diagram (ERD) solution and shows the type of icons and graphics you can use to develop a model of a database of arbitrary complexity using Crow's Foot notation.
Example 3. Entity Relationship Model Diagram — Crows's Foot notation
This sample demonstrates an Entity-relationship model diagram. Highlight the boxes in the ERD diagram with bright colors to make it attractive and easy to remember.
Example 4. Crows's Foot ERD notation — Students and Teachers
This Entity-Relationship Diagram shows the relationships between the Students and Teachers entities. Drawing all entities of ER-diagram in one color spectrum, highlighting the headers, you will make your diagram look stylish and then successfully use it in different conferences, discussions, publications.
Example 5. Chen ERD notation — WordPress File reference
This ERD example shows an Entity-Relationship Diagram of a WordPress file reference using Chen’s Notation, which represents the entities as rectangles and attributes as ovals. Creating similar Entity Relationship Diagram examples and diagrams in ConceptDraw DIAGRAM will take just minutes.
Example 6. Chen ERD Template
This template from Entity Relationship Diagram (ERD) solution contains special objects and settings for creating entity relationship diagrams based on the Chen ERD notation.
How to Create an ERD Diagram
The ability to describe a database using the Entity-Relationship model is delivered by the Entity-Relationship Diagram (ERD) solution.
Open ConceptDraw STORE, check the ERD solution and click “Install”.
This solution extends ConceptDraw DIAGRAM with 2 libraries that contains 45 objects advocated by Chen's and Crow’s Foot notations that can be used when describing a database.
Pic. 1. ERD symbols - Chen's notation
Pic. 2. ERD symbols - Crow's Foot notation
- From the ConceptDraw STORE open the Chen's ERD, or the Crow's Foot ERD template from the ERD section.
- Add objects to the diagram by dragging them from the Chen's ERD, or the Crow's Fot ERD library to the document page.
- Use Clone tool (Mac),(Win) to quickly add copies of the selected object.
- Select the Smart Connector tool
. To connect elements using this tool, drag the connector from one connect dot to another.
- Use Line, Fill, Shadow and Text tools to format diagram objects.
Example 6. Entity Relationship Diagram Examples
The 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.
The ERD solution provides entity relationship diagram examples, templates and library of vector stencils.
Example 7. Entity Relationship Diagram solution
Entity Relationship Diagram examples from ERD solution for ConceptDraw DIAGRAM can be used as a start point for professional ERD drawing. Entity Relationship Diagram examples can be simply modified to illustrate the logical structure of exact database.
TEN RELATED HOW TO's:
Database design is an important part of any project, as databases become more and more complex nowadays. To make the model more representative, entity relationship diagrams are widely used in software engineering area. These diagrams show sets of entities as rectangles connected via lines labeled with their cardinalities.
This an example of the ER-diagram developed to store information regarding some online role-playing game. It includes three main elements of ER diagram: entities, relationships and attributes. The entities, attributes and relationships on this ER-diagram is depicted according to the Chen's notation. Chen's notation for Entity Relationship diagrams admits using of rectangles to depict entities, ovals for attributes and ,at least, diamonds to show relationships. ConceptDraw Entity-Relationship Diagrams solution was applied as ERD software to create this diagram.
Picture: ConceptDraw DIAGRAM ER Diagram Tool
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