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
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.
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
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:
Planning a computer network can be a challenge for a junior specialist. However, knowing how to draw a computer network diagrams isn’t a rocket science anymore. There are a lot of special software for creating such diagrams with predesigned templates and examples.
The core for Network Fault Tolerance System presented here, is the equipment of Cisco. You can see here the certified Cisco equipment icons. Generally, ConceptDraw DIAGRAM libraries contain more than half of a thousand objects representing the standardized images of Cisco equipment. ConceptDraw solution for network diagramming is a great network diagramming tool for any level skills - from students to network guru.
Picture: How to Draw a Computer Network Diagrams
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Electrical Engineering Solution used together with ConceptDraw DIAGRAM drawing facilities makes short a work of drawing various electrical and electronic circuit schemes. A library of vector objects composed from symbols of Analog and Digital Logic elements of electric circuit includes 40 symbolic images of logic gates, bistable switches of bi-stable electric current, circuit controllers, amplifiers, regulators, generators, etc. All of them can be applied in electronic circuit schemes for showing both analog and digital elements of the circuit.
Electrical Engineering Solution used together with ConceptDraw DIAGRAM drawing facilities makes short a work of drawing various electrical and electronic circuit schemes. A library of vector objects composed from symbols of Analog and Digital Logic elements of electric circuit includes 40 symbolic images of logic gates, bistable switches of bi-stable electric current, circuit controllers, amplifiers, regulators, generators, etc. All of them can be applied in electronic circuit schemes for showing both analog and digital elements of the circuit.
Picture:
Electrical Diagram Symbols F.A.Q.
How to Use Electrical ConceptDraw Diagram Software
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ER-modeling nowadays is a very popular approach for database design. If you are tired of looking for a good entity relationship diagram Software for Mac, then your search is almost over. ConceptDraw DIAGRAM is a great tool for creating diagrams of any complexity with tons of editable samples and templates.
This diagram represents the vector library of the Chen’s and Crow’s Foot notation icons for drawing ERD (entity-relationships diagram). ConceptDraw Entity Relationship Diagram solution delivers the ability to visualize databases structure on both Mac and PC. The "bricks" entity-relationships models are the entity, and the relation. An entity is represented by a rectangle comprising the entity name. It means an object, information about which should be available and stored. A relation is intended to show a relations between two entities. There are several types of relations between entities. To show there are a number of different symbols for the types of relationships.
Picture: Entity Relationship Diagram Software for Mac
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Deployment diagram describes the hardware used in system implementations and the execution environments and artifacts deployed on the hardware.
Picture: UML Deployment Diagram. Diagramming Software for Design UML Diagrams
Electronic components have two or more electrical terminals (or leads) aside from antennas which may only have one terminal. These leads connect to create an electronic circuit with a particular function (for example an amplifier, radio receiver, or oscillator). Basic electronic components may be packaged discretely, as arrays or networks of like components, or integrated inside of packages such as semiconductor integrated circuits, hybrid integrated circuits, or thick film devices.
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.
Picture: Electrical Symbols — Composite Assemblies
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ConceptDraw DIAGRAM is a powerful tool for business and technical diagramming.
Software Development area of ConceptDraw Solution Park provides 5 solutions:
Data Flow Diagrams, Entity-Relationship Diagram (ERD), Graphic User Interface, IDEFO Diagrams, Rapid UML.
Picture: Software Diagram Examples and Templates
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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.
Picture: UML Diagram for System
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UML Component Diagram Online Shopping. This sample was created in ConceptDraw DIAGRAM diagramming and vector drawing software using the UML Component Diagram library of the Rapid UML Solution from the Software Development area of ConceptDraw Solution Park.
This sample shows the concept of the online shopping and is used for the understanding of the online shopping processes, of the online shops working processes, for projection and creating of the online stores.
Picture: UML Component Diagram Example - Online Shopping
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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.
Picture:
Basic Circles Venn Diagram
Venn Diagram Example
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Try ConceptDraw program, the perfect drawing tool for creating all kinds of great-looking drawings, charts, graphs, and illustrations.
Picture: Basic Diagramming
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