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.
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:
In almost every sphere of life and work the people time to time are faced with the fact that on their way there are certain obstacles and problems. But it is not always possible to identify the true cause of particular problem. To understand the basic causes of problems and eliminate them, it is convenient to use the chart of Kaoru Ishikawa - the technique specially designed for this.
ConceptDraw DIAGRAM diagramming and vector drawing software extended with Fishbone Diagrams solution from the Management area can help you with construction the Fishbone Diagram also known as Ishikawa Diagram.
Ishikawa Diagram shows factors of Equipment, Process, People, Materials, Environment and Management, all affecting the overall problem in one drawing for the further analysis. It is a well effective way to analyze the business problems you must identify and solve.
Picture: Ishikawa Diagram
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The activity of any organization is more or less branchy network of processes. The description of these processes is a hard technical task which requires definite methodology and standards.
According to the IDEF0 standard any process can be described in the form of a block (Activity Box) which has inputs and outputs. The process consists in transformation of inputs into outputs under the influence of the management and in the presence of necessary resources. Outputs of the given process later on can be either inputs for the next process or resources, or management means.
Picture: IDEF0 standard with ConceptDraw DIAGRAM
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The vector stencils library Crow's Foot Notation from the solution Entity-Relationship Diagrams (ERD) contains specific symbols of the Crow's foot notation such as relationship symbols and entity symbols for ConceptDraw DIAGRAM software.
Picture: Martin ERD Diagrams
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ConceptDraw gives the ability to draw simple diagrams like flowcharts, block diagrams, bar charts, histograms, pie charts, divided bar diagrams, line graphs, area charts, scatter plots, circular arrows diagrams, Venn diagrams, bubble diagrams, concept maps, and others.
Picture: Simple Drawing Applications for Mac
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This sample shows the Flowchart of the testing the work of the lamp and decision making about what to do to lamp will work.
Picture: Samples of Flowchart
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UML Deployment Diagram depicts the physical deployment of artifacts on nodes (nodes are the existing hardware components, artifacts are the software components running on each node); and how the different pieces are connected.
Use ConceptDraw DIAGRAM with UML deployment diagram templates, samples and stencil library from Rapid UML solution to model the physical deployment of artifacts on nodes of your software system.
Picture: UML Deployment Diagram
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When you are a beginner in software development, you make a lot of mistakes. Developing logical models, or data flow diagrams is a way to see the the whole project and all the processes clearly. And some novices, unfortunately for them, miss modeling stage at the beginning of project life cycle, and get into troubles as the project grows.
This image represents the data flow diagram applying symbols of Yourdon and Coad notation. This DFD depicts the data flow inside an organization department deals with receivables. The icons of standard Yourdon and Coad notation provides possibility to draw professional looking and well- readable DFD for business documentation. This data flow diagram was designed with the help of ConceptDraw DIAGRAM and its Data Flow Diagrams solution. The solution delivers three vector graphic libraries including elements of Yourdon and Coad and Gane-Sarson notations.
Picture: Data Flow Diagram Process
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Stakeholder management is a critical component to the successful delivery of any project, programme or activity.
ConceptDraw DIAGRAM is a powerful diagramming and vector drawing software. Now, thanks to the Stakeholder Onion Diagrams Solution included to the Management Area of ConceptDraw Solution Park, ConceptDraw DIAGRAM became also unique stakeholder management system design software.
Picture: Stakeholder Management System using Onion Diagram
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Network Diagrams visualize schematically the computer networks topology, equipment nodes and different types of their logical and physical connections. They are widely used by IT professionals to visually document the topology and design of computer and telecommunication networks.
Picture: Computer Networking Tools List
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Diagramming is an astonishing way to visualize business processes. The list of the most common business process flowchart symbols is quite long starting from basic flowcharts, continuing with SIPOC diagrams. Business process modeling was never easier than now, with special ConceptDraw Business Process Mapping solution.
To carry out all professional standard requirements for business processes mapping, it is necessarily to follow the special graphical notations. ConceptDraw Business Process Mapping solution offers an exhaustive suite of tools to aid business process mapping. There are three vector libraries SIPOC Diagrams, Business Process Flowcharts, and Swim Lanes that contains totally more than 50 symbols of standard BPM notations. This is all that professionals need to effectively evaluate and manage quality in business processes.
Picture: Business Process Flowchart Symbols
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