Entity Relationship Diagram Examples

Creation of Entity-Relationship (ER) model is a visual representation the structure of a business database, where data equates to entities or objects, which are linked by defined relationships expressing dependencies and requirements. By the nature, the ER model is an abstract visualization, a first step in design process towards creating a logical and functional database. ConceptDraw DIAGRAM professional software gives the ability to effectively describe a database using the Entity-Relationship model. Included to ConceptDraw Solution Park, the Entity-Relationship Diagram (ERD) solution contains the set of predesigned vector icons advocated by Chen's and Crow’s Foot notations that both can be used for data modeling and describing a database. Entity-Relationship Diagram (ERD) solution includes also helpful templates and incredibly large collection of varied Entity Relationship Diagram examples and samples offered at ConceptDraw STORE. Each of them can be used to develop your own model of a database of arbitrary complexity.

How to Build an Entity Relationship Diagram (ERD)

Entity Relationship Software

Entity Relationship Diagram (ERD) is a leading data modeling tool that is used to illustrate the logical structure of database, helps to organize and represent your project's data in terms of entities, attributes and relationships. To describe the database structure usually is used the ERD Chen's or Crow's Foot notation. Chen's notation supposes the representation of entities by rectangles with the entities names inside, relationships by diamonds and attributes by ovals connected with a line to exactly one entity. In Crow's Foot notation the boxes are used to depict the entities and their attributes, the lines between them - to depict relationships. ConceptDraw DIAGRAM software extended with Entity-Relationship Diagram (ERD) Solution is convenient and useful for designing the ER Diagrams, and supports the use of Chen's or Crow’s Foot notation according to your needs and desires. The ERD diagrams produced with ConceptDraw DIAGRAM Entity Relationship Diagram software can be successfully used in whitepapers, presentations, posters, datasheets, technical materials, etc.

Telecommunication networks. Computer and Network Examples

A Telecommunications network is a network of nodes, links, trunks and telephone switches that are connected, operated by telephone companies and realize telephone, audio, visual and data communications among the users. The telecommunications network can also include Internet, microwave, wireless equipment. This example was created in ConceptDraw DIAGRAM using the Computer and Networks Area of ConceptDraw Solution Park and shows the Telecommunications network.

Active Directory Diagrams

Active Directory Diagrams solution significantly extends the capabilities of ConceptDraw DIAGRAM software with special Active Directory samples, convenient template and libraries of Active Directory vector stencils, common icons of sites and services, icons of LDPA elements, which were developed to help you in planning and modelling network structures and network topologies, in designing excellently looking Active Directory diagrams, Active Directory Structure diagrams, and Active Directory Services diagram, which are perfect way to visualize detailed structures of Microsoft Windows networks, Active Directory Domain topology, Active Directory Site topology, Organizational Units (OU), and Exchange Server organization.

UML Use Case Diagram Example. Registration System

This sample was created in ConceptDraw DIAGRAM diagramming and vector drawing software using the UML Use Case Diagram library of the Rapid UML Solution from the Software Development area of ConceptDraw Solution Park. This sample shows the types of user’s interactions with the system and is used at the registration and working with the database system.

Active Directory

The Active Directory Diagrams solution from ConceptDraw Solution Park extends ConceptDraw DIAGRAM diagramming and vector drawing software to help network engineers, designers and administrators efficiently design and create various active directory diagrams.

Sign Making Software

ConceptDraw DIAGRAM is a powerful sign making software thanks to the vector stencils library "Recreation signs". This library is included in the Directional Maps solution from the Maps area of ConceptDraw Solution Park. Sign making software is very useful tool for professional sign-making business. Use ConceptDraw DIAGRAM and make sure that now sign making is easier and timesaving than ever!

Entity-Relationship Diagram

Entity Relationship Diagram (ERD) is the world-known way to show the logical structure of databases in visual manner. The best software tool for drawing Entity-Relationship Diagram is ConceptDraw DIAGRAM ector graphics software with Entity-Relationship Diagram (ERD) solution from Software Development area which gives the ability to describe a database using the Entity-Relationship model. The vector graphic diagrams produced using this solution can be successfully used in whitepapers, presentations, datasheets, posters, or any technical materials.

Active Directory - Vector stencils library

The vector stencils library "Active Directory" contains 20 symbols of Active Directory elements for drawing AD network diagrams. It helps network and system administrators to visualize Microsoft Windows Active Directory structures for network design, installation and maintainance.
"An Active Directory structure is an arrangement of information about objects. The objects fall into two broad categories: resources (e.g., printers) and security principals (user or computer accounts and groups). Security principals are assigned unique security identifiers (SIDs).
Each object represents a single entity - whether a user, a computer, a printer, or a group - and its attributes. Certain objects can contain other objects. An object is uniquely identified by its name and has a set of attributes - the characteristics and information that the object represents - defined by a schema, which also determines the kinds of objects that can be stored in Active Directory.
The schema object lets administrators extend or modify the schema when necessary. However, because each schema object is integral to the definition of Active Directory objects, deactivating or changing these objects can fundamentally change or disrupt a deployment. Schema changes automatically propagate throughout the system. Once created, an object can only be deactivated - not deleted. Changing the schema usually requires planning. Sites are implemented as a set of well-connected subnets." [Active Directory. Wikipedia]
The AD symbols example "Active Directory - Vector stencils library" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Active Directory Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.
www.conceptdraw.com/ solution-park/ active-directory-diagrams

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