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Entity Relationship Diagram Software Engineering

Entity Relationship Diagram (aka ERD, ER Diagram, E-R Diagram) is a well-tried software engineering tool for data modeling, system design and illustrating the logical structure of databases. Introduced by Peter Chen the ER modeling technique is now successfully used in software development, when creating conceptual data model of an information system.

There are used three basic elements for ERDs construction: entities, attributes, relationships. Chen's notation for ERD assumes the use of rectangles to represent entities and diamonds to represent relationships between first-class objects. Another popular notation for ER diagrams is Crow's foot notation.

Professional ERD drawing is an essential software engineering method for database modeling. ConceptDraw DIAGRAM as a powerful Entity Relationship Diagram software engineering offers the tools of Entity-Relationship Diagram (ERD) solution from Software Development area of ConceptDraw Solution Park.

Entity Relationship Diagram Software Engineering *

Example 1. Entity Relationship Diagram Software Engineering (Mac OS X, Microsoft Windows)

Use ConceptDraw DIAGRAM enhanced with Entity-Relationship Diagram (ERD) solution to draw Entity Relationship Diagrams using Chen's or crow's foot notations. This solution contains a lot of useful drawing tools, 2 libraries with 45 vector design elements for both notations, and amazing collection of ready ERD samples, examples and templates for quick start.

Entity relationship diagram - ERD sample, Chen's notation

Example 2. Entity relationship diagram (ERD), Chen's notation

The Entity-Relationship Diagram (ERD) solution for ConceptDraw Solution Park is an effective help in description a database using the Entity-Relationship model. Make sure this right now!

Entity Relationship Diagram Software Engineering

Example 3. Entity Relationship Model Diagram, Crow's Foot notation

The following features make ConceptDraw DIAGRAM the best Entity Relationship Diagram Software:

  1. You don't need to be an artist to draw professional looking diagrams in a few minutes.
  2. Large quantity of ready-to-use vector objects makes your drawing diagrams quick and easy.
  3. Great number of predesigned templates and samples give you the good start for your own diagrams.
  4. ConceptDraw DIAGRAM provides you the possibility to use the grid, rules and guides. You can easily rotate, group, align, arrange the objects, use different fonts and colors to make your diagram exceptionally looking.
  5. 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.
  6. Using ConceptDraw STORE you can navigate through ConceptDraw Solution Park, managing downloads and updates. You can access libraries, templates and samples directly from the ConceptDraw STORE.
  7. If you have any questions, our free of charge support is always ready to come to your aid.


Marketing and Sales Organization chart.Organization chart Example →

My friend works as a marketologist. Once he asked me about Marketing and Sales Organization chart, as it was new for him. Luckily, ConceptDraw Solution Park has tons of examples to show to an unexperienced user. This organizational chart was designed with ConceptDraw DIAGRAM and its Organizational Charts solution, that can be find in the Management section of Solution Park. This solution offers a vector objects library and a set of samples and templates. The vector library contains symbols and icons that provide you with possibility to show the organizational structure of your organization at a glance. It allows to depict the interrelations of authority and responsibility between positions in an organization. Organizational charts provide both employers and employees a clear view of the sale and marketing departments structure, reporting system, management levels.Marketing and Sales  Organization chart.<br>Organization chart Example *
Picture: Marketing and Sales Organization chart.Organization chart Example
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ConceptDraw DIAGRAM can help you make professional diagrams quickly.Best Software to Draw Diagrams *
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How to Draw an Effective Flowchart →

Use ConceptDraw DIAGRAM diagramming and business graphics software to draw your own flowcharts of business processes.How to Draw an Effective Flowchart *
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How to Create a Social Media DFD Flowchart →

In order to be successful, you have to promote your business on the market. One of the ways for planning this promotion is to create a social media DFD Flowchart which will contain all the details of your business strategy. Social media is a very influential tool, and it's a mistake to ignore it. The following flowchart represents a best way to estimate social media posts, and gives a strategy of responses. This flowchart is designed in the format of cross-functional flowchart. With this format, we can divide the process into three distinct phases. This approach helps to generate well-considered and balanced response on social networks activities. Using ConceptDraw solution for Social Media Response, your reaction to social media posts will positively mirror the values and mission of your business.How to Create a Social Media DFD Flowchart *
Picture: How to Create a Social Media DFD Flowchart
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Diagram of a Basic Computer Network. Computer Network Diagram Example →

What is a computer network? This is a set of devices and systems that are connected to each other (logically or physically) and communicate with each other. This could include servers, computers, phones, routers, and so on. The size of this network can reach the size of the Internet, and can consist of only two devices connected by a cable. This sample shows the connection scheme of the home WLAN equipment to the Internet.Diagram of a Basic Computer Network
Picture: Diagram of a Basic Computer Network. Computer Network Diagram Example
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Electrical Symbols — Semiconductor →

Semiconductors are crystalline or amorphous solids with distinct electrical characteristics. They are of high resistance — higher than typical resistance materials, but still of much lower resistance than insulators. Their resistance decreases as their temperature increases, which is behavior opposite to that of a metal. Finally, their conducting properties may be altered in useful ways by the deliberate, controlled introduction of impurities into the crystal structure, which lowers its resistance but also permits the creation of semiconductor junctions between differently-doped regions of the extrinsic semiconductor crystal. The behavior of charge carriers which include electrons, ions and electron holes at these junctions is the basis of diodes, transistors and all modern electronics. 26 libraries of the Electrical Engineering Solution of ConceptDraw DIAGRAM make your electrical diagramming simple, efficient, and effective. You can simply and quickly drop the ready-to-use objects from libraries into your document to create the electrical diagram.Electrical Symbols — Semiconductor *
Picture: Electrical Symbols — Semiconductor
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