Entity Relationship Diagram Examples

Create an Entity-Relationship (ER) model is to visually represent the structure of a business database, where data equates to entities (or objects) that are linked by defined relationships expressing dependencies and requirements. By nature it is an abstract visualization, the first step in the design process towards creating a logical and functional database.

ConceptDraw DIAGRAM diagramming and vector drawing software gives the ability to describe a database using the Entity-Relationship model. Entity-Relationship Diagram(ERD) solution from the Software Development area supplies the ConceptDraw DIAGRAM with icons advocated by Chen's and Crow’s Foot notation that can be used when describing a database.

Entity Relationship Diagram Symbols

Creating an entity-relationship (ER) model is to visually represent the structure of a business database, where data equates to entities (or objects) that are linked by defined relationships expressing dependencies and requirements. By nature it is an abstract visualization, the first step in the design process towards creating a logical and functional database.
ERD symbols used for professional ERD drawing are collected in libraries from the Entity-Relationship Diagram (ERD) solution for ConceptDraw DIAGRAM.

ERD Symbols and Meanings

Crow's foot notation is used in Barker's Notation, Structured Systems Analysis and Design Method (SSADM) and information engineering. Crow's foot diagrams represent entities as boxes, and relationships as lines between the boxes. Different shapes at the ends of these lines represent the cardinality of the relationship.
The Chen's ERD notation is still used and is considered to present a more detailed way of representing entities and relationships.
To create an ERD, software engineers mainly turn to dedicated drawing software, which contain the full notation resources for their specific database design - ERD symbols and meanings. CS Odessa has released an all-inclusive Entity-Relationship Diagram (ERD) solution for their powerful drawing program, ConceptDraw DIAGRAM.

Entity Relationship Diagram Software for Mac

One of the most popular semantic data models is the "entity-relationship" model (often called ER-model). Most of the modern approaches to the database (mainly relational) design are based on the usage of different versions of ER- model. Domain modeling is based on the use of graphic charts, including a small number of heterogeneous components. The simplicity and the presentation clarity of the conceptual basis of these ER-model schemes led to its widespread deployment in the CASE-systems that support automatic design of relational databases.
A relation is a graphically depicted association between two entities. As well as the entity, a relation is a typical concept, all instances of the linked entity types are subject to the rules established by the connecting. Therefore, it is more correct to speak about the relationship type made between types of entities and about the instances of relationship types made between instances of the entity type. In common ER-model this association is a

Business Process Mapping — How to Map a Work Process

ConceptDraw DIAGRAM is a world-class diagramming platform that lets you display, communicate, and present dynamically. It′s powerful enough to draw everything from basic flowcharts to complex engineering schematics.
Video tutorials on ConceptDraw products. Try it today!

UML Class Diagram Generalization Example UML Diagrams

This sample was created in ConceptDraw DIAGRAM diagramming and vector drawing software using the UML Class Diagram library of the Rapid UML Solution from the Software Development area of ConceptDraw Solution Park.
This sample describes the use of the classes, the generalization associations between them, the multiplicity of associations and constraints. Provided UML diagram is one of the examples set that are part of Rapid UML solution.

Diagramming Software for Design UML Collaboration Diagrams

ConceptDraw helps you to start designing your own UML Collaboration Diagrams with examples and templates.

Wireframing

Website wireframe is a detailed view of design or its skeleton. It shows all the important elements of the final website, the main groups of contents, information structure, describes the user's interaction with interface and its estimated visualisation.
ConceptDraw DIAGRAM extended with Website Wireframe solution from the Software Development area is the best wireframing software. Using the wireframe tools, libraries of vector objects, template and examples which offers a Website Wireframe solution, you will easily design the websites wireframes of any complexity.

How To Draw an iPhone?

How To Draw an iPhone? It's very fast and easy to draw an iPhone and design iPhone user interface using the tools of ConceptDraw DIAGRAM extended with iPhone User Interface Solution. iPhone User Interface Solution offers you the incredibly large quantity of predesigned objects that are grouped to 9 libraries: Apps Icons, Bars, Content Views, Controls, iMessage, iPhone 6 Mockup, Tab Bar Icons, Temporary Views, Toolbar and Navigation Bar Buttons.

ConceptDraw DIAGRAM Network Diagram Tool

With ConceptDraw DIAGRAM you can diagram a network or create a computer network diagram using specialized libraries of network components such as computers, hubs, smart connectors etc. that simulate network design topologies and devices, network architectures (all these shapes are parts of network diagram tool ConceptDraw DIAGRAM).