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entity-relationship diagram, ER-diagram, database ERD Entity-Relationship Diagram (ERD)

entity-relationship diagram, ER-diagram, database ERD
An Entity-Relationship Diagram (ERD) is a visual presentation of entities and relationships. That type of diagrams is often used in the semi-structured or unstructured data in databases and information systems. At first glance ERD is similar to a flowch

ConceptDraw DIAGRAM is an Advanced tool for Professional Network Diagrams Creation

Wireless Network solution contains template, library and a set of design elements that help network engineers visualize Wireless Network. Network engineers and designers use this solution to design, create and illustrate the wireless networks.

Network Security Architecture Diagram

Network Security Architecture Diagram visually reflects the network's structure and construction, and all actions undertaken for ensuring the network security which can be executed with help of software resources and hardware devices. You dream to find powerful software for easy designing Network Security Architecture Diagram? We recommend to use ConceptDraw DIAGRAM extended with Network Security Diagrams Solution from the Computer and Networks Area of ConceptDraw Solution Park.

Entity Relationship Diagram Symbols

The semantic modeling method nowadays is successfully applied in database structure design. It is effective method of modeling the data structures, which is based on the meaning of these data. As a tool of semantic modeling, there are used different types of Entity-Relationship Diagrams. Entity Relationship Diagram (ERD) is applied to visually and clearly represent a structure of a business database. The main components of ERDs are: entity, relation and attributes. An entity is a class of similar objects in the model, each entity is depicted in the form of rectangle and has the name expressed by a noun. Relation is shown in the form of non-directional line that connects two entities. There are several notation styles used for ERDs: information engineering style, Chen style, Bachman style, Martin Style. The Entity Relationship Diagram symbols used for professional ERD drawing are predesigned by professionals and collected in the libraries of the Entity-Relationship Diagram (ERD) solution for ConceptDraw DIAGRAM software.

Data structure diagram with ConceptDraw DIAGRAM

Data structure diagram (DSD) is intended for description of conceptual models of data (concepts and connections between them) in the graphic format for more obviousness. Data structure diagram includes entities description, connections between them and obligatory conditions and requirements which connect them. Create Data structure diagram with ConceptDraw DIAGRAM.

Business and Software Diagrams

ConceptDraw DIAGRAM Software is a cross-platform flowcharting tool with extended HTML capabilities. It contains more than 10 000 pre-created objects and many templates, available for PC and Macintosh. Creating great designs and diagrams involves having the right drawing software. ConceptDraw is the business diagram software of choice for business professionals who need to quickly and easily visualize, explore, and communicate information.

Components of ER Diagram

Entity-Relationship model gives the possibility to visually describe a database using the components of ER Diagram, entity relationship stencils, relationship symbols, work flow shapes. ER-diagram lets represent the data or entities, attributes of these entities and relationships between them, using standardized Crow’s Foot notation icons or Chen’s notation icons. An entity is an object of the real world, it can exist independently and has the instances which differ in attribute values (properties). The attributes give an unambiguous (uniquely) identification for the instance and are called the primary key, this key can be composite and combine several attributes. ConceptDraw DIAGRAM is a professional software available with Entity-Relationship Diagram (ERD) solution from Software Development area that lets create ERDs for various database systems, using Crow’s Foot and Chen’s notations. It is invaluable tool for software engineers and developers, it supports ODBC-compatible databases (Oracle, MySQL, MS Access, MS SQL, InterBase, Firebird and others).

Draw Diagram on Mac

Professional diagramming software for mac helps you create Cause and Effect diagram known as Fishbone diagram or Ishikawa diagram from ConceptDraw Business Solution. You will be offered to use templates, samples or draw your diagram using ConceptDraw Arrows10 Technology

Diagramming Tool Mac

The best Entity Relationship Diagram tool for Mac - ConceptDraw DIAGRAM , extebded with the professional ERD drawing solution. The vector graphic diagrams can be drawn by everybody.

CCTV Network Diagram Software

The CCTV is the process that carried out using the video cameras for transmitting the signal to the specific location, on the limited set of monitors. We are talking about the video cameras that are used for monitoring on such guarded objects as airports, banks, stores, military objects, etc. CCTV equipment is also used in the industrial installations, for surveillance in the public places, for recording the video on the digital video recorders.

Cross-Functional Flowchart (Swim Lanes)

Cross-Functional Flowchart is a type of chart which shows the series of process steps connected by the arrows to depict their order and applies the swim lanes to provide an extra dimension with means of assigning each process step to certain category. Often the category or the functional unit is a stakeholder (department, person, role), resource, project, phase, or any other attribute. Cross-Functional Flowcharts visually illustrate relationships between the business processes and the functional units responsible for this processes. ConceptDraw DIAGRAM is a powerful diagramming and vector drawing software for professional design Cross-Functional Flowcharts using the common notation of shapes and swim lanes. Cross-Functional Flowcharts solution included to the Business Processes area of ConceptDraw Solution Park provides numerous well-designed vector objects and connector tools for quick, easy and effective organizing information, representing process flows and relationships, and drawing Cross-Functional Flowcharts for business, science, education, technology, etc.

Network Visualization with ConceptDraw DIAGRAM

ConceptDraw makes the entire process of network visualization easier thanks to the numerous ready-to-use objects included in the package for presentation of network equipment, LDAP directory symbols and many other objects that symbolize resources in most various representations.

Network Security Model

Creation of well thought-out network security model will effectively help you in realization your network's security. ConceptDraw DIAGRAM diagramming and vector drawing software extended with Network Security Diagrams Solution from the Computer and Networks Area of ConceptDraw Solution Park lets fast and easy design all variety of network security models: Open network security model, Closed network security model, Restrictive network access model.

ERD Symbols and Meanings

Entity Relationship Diagram (ERD) is a popular software engineering tool for database modeling and illustration the logical structure of databases, which uses one of two notations - Chen's or Crow’s Foot. Crow's foot notation is effective when used in software engineering, information engineering, structured systems analysis and design. Each of these notations applies its own set of ERD symbols. Crow's foot diagrams use boxes to represent entities and lines between these boxes to show relationships. Varied shapes at the ends of lines depict the cardinality of a given relationship. Chen's ERD notation is more detailed way to represent entities and relationships. ConceptDraw DIAGRAM application enhanced with all-inclusive Entity-Relationship Diagram (ERD) solution allows design professional ER diagrams with Chen's or Crow’s Foot notation on your choice. It contains the full set of ready-to-use standardized ERD symbols and meanings helpful for quickly drawing, collection of predesigned ERD samples, examples and templates. ConceptDraw Pro is a great alternative to Visio for Mac users as it offers more features and can easily handle the most demanding professional needs.
How to Build an Entity Relationship Diagram (ERD)
How to Build an Entity Relationship Diagram (ERD)

ConceptDraw Arrows10 Technology

Imagine the diagram which is looking smart. That is how ConceptDraw Arrows10 Technology or Smart connectors work. Thanks to auto-routing feature connectors flow around objects. But if you want some background objects that the connectors flow through - that is also possible to do.

ConceptDraw Arrows10 Technology

When using a shapes′ center connection the connection becomes dynamic, the connector will trace the contour of the object, when moving the object inside your diagram. Using any other connection point provides a static connection, when you move connected objects the connector stays attached to the same point.

UML Block Diagram

Use Case Diagram Taxi Service UML. 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 work of the taxi service and is used by taxi stations, by airports, in the tourism field and delivery service.

ConceptDraw Arrows10 Technology

How should diagramming software work? The answer is - Fast and easy. "Tree"- mode drawing works like that. Just select objects in your drawing and press Tree or Chain button to connect all of them just in one click. Your diagram looks professional and it took only a moment to draw.

Guesthouse Network

This sample was created in ConceptDraw DIAGRAM diagramming and vector drawing software using the Computer and Networks solution from Computer and Networks area of ConceptDraw Solution Park. Computer and Networks solution provides examples, templates and vector stencils library with symbols of local area network (LAN) and wireless LAN (WLAN) equipment.

ConceptDraw Arrows10 Technology

New Smart connectors in ConceptDraw DIAGRAM now have an auto-routing feature. This means that connectors always find the optimal route between objects and automatically recalculate that path when moving these objects. You don't have to think about your connectors, they think for you.