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Components of ER Diagram

Entity-Relationship model making possibility to describe a database using components of ER Diagram in which in the tables data can be the point to data in other tables - for instance, your entry in the database could point to several entries.

ConceptDraw DIAGRAM is a powerful professional software extended with Entity-Relationship Diagram (ERD) solution from the Software Development area of ConceptDraw Solution Park. It gives the ability to draw ER diagram (ERD) for visual describing database using the Crow’s Foot notation icons and Chen’s notation icons.

Components of ER Diagram *

Example 1. Components of ER Diagram, Crow's Foot and Chen's notations

The Chen's ERD notation is still used and is considered to present a more detailed way of representing entities and relationships.

Most other notation systems are adaptations, or use part of these original styles. Here is a brief list of some of other standards that have been developed:

  • Bachman notation
  • Barker’s notation (ERDs for Oracle)
  • EXPRESS and EXPRESS-G notation
  • IDEFX1
  • UML class diagrams
  • Merise
  • Object role modeling
  • (Min – Max) notation

ER Diagram, Chen's notation

Example 2. ER Diagram, Chen's notation

ERDs are an invaluable tool for software engineers, particularly since computing capacity, and thus data storage capacity, has markedly increased in recent years. They allow every aspect of database design to be managed, tested and communicated before implementation. Because ERDs have such a broad scope of influence across database activities, it’s imperative the standardized notation can be utilized and interpreted by a wide variety of stakeholders.

ER Diagram, Crow's Foot

Example 3. ER Diagram, Crow's Foot

The Entity-Relationship Diagram (ERD) solution from ConceptDraw Solution Park extends ConceptDraw DIAGRAM ector graphics and diagramming software with the ability to draw your own entity relationship diagrams using Chen's or Crow's Foot notations applying 2 libraries with numerous predesigned ER icons:

  • ERD, Chen's Notation library
  • ERD, Crow's Foot Notation library

ERD Solution

Example 4. ERD Solution

The samples you see on this page were created in ConceptDraw DIAGRAM using the components of ER diagram from the libraries of Entity-Relationship Diagram (ERD) Solution. An experienced user spent 10-15 minutes creating each of these samples.

Use the Entity-Relationship Diagram (ERD) Solution for ConceptDraw DIAGRAM to create your own Entity-Relationship Diagrams of any complexity quick, easy and effective.

The Entity-Relationship Diagrams designed with ConceptDraw DIAGRAM are vector graphic documents and are available for reviewing, modifying, converting to a variety of formats (image, HTML, PDF file, MS PowerPoint Presentation, Adobe Flash or MS Visio), printing and send via e-mail in one moment.






NINE RELATED HOW TO's:

E-R Diagrams →

Complexity of databases increases day by day, due to this the Entity relationship models and E-R diagrams become more and more popular, and now are an important part of database design. E-R diagrams created at ConceptDraw DIAGRAM allow visually and graphically represent structure and design of databases.E-R Diagrams *
Picture: E-R Diagrams
Related Solution:

Design Element: Chen for Entity Relationship Diagram - ERD →

It is very difficult to get into database model idea without any examples. To create one, you can use Chen’s notation for Entity Relationship Diagrams (ERD) and try to see all the peculiarities yourself. This notation describes entities and relations as basic geometric shapes like rectangles and diamonds. Chen notation for Entity-relationship diagrams is used for designing relational databases. It depicts the database entities as a set of subjects. For example events, people, ideas, etc. All entities has common characteristics (attributes). Any object of the system is identified as the sole and unique. The name of entity should indicate the class or type of the the whole object, not a given example. The connection commonly represents a relationship between entities. Conceptdraw Entity-Relationship Diagrams (ERD) solution provides the libraries with ready-to-use ERD element fitting Chen's notation objects and relationships.Design Element: Chen  <br>for Entity Relationship Diagram - ERD *
Picture: Design Element: Chen for Entity Relationship Diagram - ERD
Related Solution:

UML Deployment Diagram. Design Elements →

UML Deployment diagram describes the hardware used in system implementations and the execution environments and artifacts deployed on the hardware. ConceptDraw has 393 vector stencils in the 13 libraries that helps you to start using software for designing your own UML Diagrams. You can use the appropriate stencils of UML notation from UML Deployment library.UML Deployment Diagram. Design Elements *
Picture: UML Deployment Diagram. Design Elements
Related Solution:

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

The Entity-Relationship Diagram (ERD) solution from ConceptDraw Solution Park extends ConceptDraw DIAGRAM vector 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 *
Picture: Entity Relationship Diagram - ERD - Software for Design Chen ER Diagrams
Related Solution:

Entity-Relationship Diagram (ERD) with ConceptDraw DIAGRAM  →

Database structures are usually described by ER-diagrams which represents entities as boxes with lines-connections between them. You can create any entity-relationship diagram (ERD) by means of ConceptDraw DIAGRAM using ready-to-use templates and special libraries containing all the needed symbols and shapes. Creating a model for your database from now on can take just a few minutes. ERD (entity relationship diagram) designed to show the logical structure of databases. It intended to depict the relationships between data components (entities). ERDs are a popular tool for software engineers and architects. Using ERD they can manage the every aspect of database design. Also ERD can be used as guidelines for testing and communications before software release. This diagram represents the file reference system of the WordPress web platform. Because entity relationship diagrams have such a broad application area through the prevalence of database technology, it can be applied for a wide range of users.Entity-Relationship Diagram (ERD) <br>with ConceptDraw DIAGRAM  *
Picture: Entity-Relationship Diagram (ERD) with ConceptDraw DIAGRAM
Related Solution:

Entity Relationship Software →

Both Crow’s Foot and Chen’s notations are used to build database models. Each of them has its’ own features, and if you use a proper entity relationship diagram software, you’ll be able to create diagrams of any notation. Database model with clearly defined entities and relationships between them facilitates further work greatly. This ERD represents the model of Employee Certification Entity. The entity-relationship diagram is a visual instrument of database software development. It is used to structure data and to define the relationships between structured data groups. This ERD was designed with a help of ConceptDraw Entity-Relationship Diagram (ERD) solution. The solution supports the both basic ERD notations used to describe the structure of database: Chen's and Crow’s Foot notations.Entity Relationship Software *
Picture: Entity Relationship Software
Related Solution:

What's the best ERD tool for the Mac? →

What's the best ERD tool for the Mac? ConceptDraw DIAGRAM on Mac OS X supplied with Entity-Relationship Diagram (ERD) Solution from the Software Development Area for ConceptDraw Solution Park is the best ERD tool! This solution offers for ConceptDraw users so powerful drawing tools, libraries with numerous ERD objects, which will help design ER diagrams of any complexity and any design you want.What
Picture: What's the best ERD tool for the Mac?
Related Solution:

Process Flowchart →

When trying to figure out the nature of the problems occurring within a project, there are many ways to develop such understanding. One of the most common ways to document processes for further improvement is to draw a process flowchart, which depicts the activities of the process arranged in sequential order — this is business process management. ConceptDraw DIAGRAM is business process mapping software with impressive range of productivity features for business process management and classic project management. This business process management software is helpful for many purposes from different payment processes, or manufacturing processes to chemical processes. Business process mapping flowcharts helps clarify the actual workflow of different people engaged in the same process. This samples were made with ConceptDraw DIAGRAM — business process mapping software for flowcharting and used as classic visio alternative because its briefly named "visio for mac" and for windows, this sort of software named the business process management tools. This flowchart diagram shows a process flow of project management. The diagram that is presented here depicts the project life cycle that is basic for the most of project management methods. Breaking a project into phases allows to track it in the proper manner. Through separation on phases, the total workflow of a project is divided into some foreseeable components, thus making it easier to follow the project status. A project life cycle commonly includes: initiation, definition, design, development and implementation phases. Distinguished method to show parallel and interdependent processes, as well as project life cycle relationships. A flowchart diagram is often used as visual guide to project. For instance, it used by marketing project management software for visualizing stages of marketing activities or as project management workflow tools. Created with ConceptDraw DIAGRAM — business process mapping software which is flowcharting visio alternative or shortly its visio for mac, this sort of software platform often named the business process management tools.Process Flowchart
Picture: Process Flowchart
Related Solution:

Banquet Hall Plan Software →

Public catering business will always be in demand.To attract a lot of clients, it’s important to have a detailed banquet hall plan, a diverse menu and reasonable prices. If you want to create a good plan, you can use drawing software. When planning and considering the layout of a banquet hall, one must take into consideration, that it is very significant to make it stylish with correctly selected appointment and celebratory belongings. Tables and seating must be handily arranged. The furniture arrangement can changes depending on client requirements, kind of banquet and amount of guests. ConceptDraw Cafe and Restaurant Plans solution supplies a dozens of predesigned vector graphic objects of banquet furniture and accessories. Thus you can design the Banquet Hall layout for the celebrations in any style and any number of guests.Banquet Hall Plan Software
Picture: Banquet Hall Plan Software
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ConceptDraw
DIAGRAM 15