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DIAGRAM 14

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.






TEN RELATED HOW TO's:

Software Diagram Examples and Templates →

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Picture: Software Diagram Examples and Templates
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DFD Flowchart Symbols →

A Data Flow Diagram (DFD) is a graphical technique which allows effectively model and analyze the information processes and systems. The ability to fast and easy create the DFDs is made possible with Data Flow Diagrams solution from the Software Development area of ConceptDraw Solution Park. For designing the Data Flow Diagrams are used simple DFD flowchart symbols which are connected each other by arrows depicting the data flow from one step to another.DFD Flowchart Symbols *
Picture: DFD Flowchart Symbols
Related Solution:

UML Diagram for System →

This sample shows the UML Class Diagram of delivery system. On this diagram you can see the classes that are connected with aggregation and composition associations indicated with the multiplicity. This sample can be used by delivery services, postal services.UML Diagram for System *
Picture: UML Diagram for System
Related Solution:

UML Component Diagram Example - Online Shopping →

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Picture: UML Component Diagram Example - Online Shopping
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Basic Circles Venn Diagram. Venn Diagram Example →

Venn Diagrams visualize all possible logical relations between several sets and are widely used in mathematics, logic, statistics, marketing, sociology, etc. This Venn Diagram shows the relative complement of the set A with respect to the set B. It is the set of the elements in B, but not in A. In other words it is the set-theoretic difference B-A.Venn Diagram Example - Basic Circles Venn Diagram
Picture: Basic Circles Venn Diagram. Venn Diagram Example
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Basic Diagramming →

Try ConceptDraw program, the perfect drawing tool for creating all kinds of great-looking drawings, charts, graphs, and illustrations.Basic Diagramming *
Picture: Basic Diagramming
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Cross Functional Diagram →

You want design the Cross Functional Diagram and need powerful software? Then ConceptDraw DIAGRAM diagramming and vector drawing software extended with Cross-Functional Flowcharts Solution is exactly what you need.Cross Functional Diagram *
Picture: Cross Functional Diagram
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Program to Make Flow Chart →

Use ConceptDraw DIAGRAM diagramming and business graphics software for drawing your own PM life cycle flow charts.Program to Make Flow Chart *
Picture: Program to Make Flow Chart
Related Solution:

Jacobson Use Cases Diagram →

The vector stencils library UML Use Case contains specific symbols of the UML notation such as actors, actions, associations and relationships for the ConceptDraw DIAGRAM diagramming and vector drawing software. This library is contained in the Rapid UML solution from Software Development area of ConceptDraw Solution Park.Jacobson Use Cases Diagram *
Picture: Jacobson Use Cases Diagram
Related Solution:
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DIAGRAM 14