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.
NINE RELATED HOW TO's:
If you have a small budget to design a computer network, you have to be very careful. One of the most cheap technologies to implement is a bus network topology, however it has many disadvantages. For instance, if the network cable is somehow damaged, the entire network won't work.
This diagram illustrates a so-called "Bus" network topology. This type of network arrangement means that each computer or other device is linked to a main link (bus). The end nodes are shown as a circle. The links to the bus are depicted as solid vertical lines. The bus is shown as a bold horizontal line. This diagram can serve as a template for creating logical or physical network diagrams. The set of vector libraries supplied with ConceptDraw Computer and Networks solution contains the symbols of all LAN and WLAN elements required for creating network diagrams of any configuration.
Picture: Bus Network Topology
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ConceptDraw gives the ability to draw Flowchart documents. Flowcharts solutionis a powerful tool that extends ConceptDraw application for drawing business flowcharts.
ConceptDraw DIAGRAM vector diagramming and business graphics software enhanced with with templates, green and interactive flowchart makers, samples and stencil libraries from ConceptDraw Solution Park which all focused to help with drawing 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: The Best Flowchart Software Available
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UML Package Diagram illustrates the functionality of a software system.
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 Package library.
Picture: UML Package Diagram. Design Elements
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You can see that when you rotate a group, connectors change their angle, keeping their position inside of the grouped objects. If you decide to ungroup the objects, the connectors will adjust to keep lines parallel to the edges of the sheet.
The magic of ConceptDraw Arrows10’s rotating group containing connectors, makes complex diagramming simple and easy.
The way to connect objects has never been easier.
Picture: ConceptDraw Arrows10 Technology
ConceptDraw DIAGRAM is a Mac OS X and Windows platforms professional software to draw your own business process diagrams and flowcharts.
Picture: Professional Diagram and Flowchart Software
Computer networks nowadays are spread all across the world. The large number of parameters, such as geographic scale or communication protocols, can divide networks. One of the most common types of networks is called local area network (LAN). It convenient to represent network examples by means of diagrams.
This local area network (LAN) diagram provides an easy way to see the way the devices in a local network are interacted. The diagram uses a library containing specific symbols to represent network equipment , media and the end-user devices such as computers (PC, mac, laptop) , network printer, hubs, server and finally a modem. There are two types of network topologies: physical and logical. The current diagram represents precisely a physical type of LAN topology because it refers to the physical layout of a local network equipment.
Picture:
What is a Local Area Network?
Examples of LAN Diagrams
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Event-Driven Process chain Diagrams for improvement throughout an organisation. Best software for Process Flow Diagram. The Event-driven Process Chain (EPC) Diagrams allows managers to plan processes and resources.
Picture: Business process Flow Chart — Event-Driven Process chain (EPC) diagrams
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There are plenty of diagramming tools, the question is to choose the most suitable for your needs. For example, you can choose ConceptDraw DIAGRAM as organizational chart software and get fascinating results in a few minutes. An orgchart is useful for any corporation.
This is an example of a hierarchical organization scheme of the company. It has tree-like structure. Each middle manager is subordinated to a few employees, and he is accountable to one of the top managers. Every type of organizational composition of businesses may be presented in the view of an organizational chart that is supported by ConceptDraw Organisational Charts solution. There are number of ways of building a structure of business organization, establishing how it should function.
Picture: ConceptDraw DIAGRAM - Organizational chart software
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Software-Defined Networking (SDN) is a new powerful concept for decision these problems. SDN proposes to disaggregate the traditional networking stacks that are vertically integrated to customize the network operations for specialized environments and improve network service velocity.
On this example you can see the Software-Defined Networking (SDN) diagram that was created in ConceptDraw DIAGRAM using the Computer and Networks Area of ConceptDraw Solution Park.
Picture: Software Defined Networking System Overview
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