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Entity Relationship Diagram Software Engineering

Entity Relationship Diagram Software Engineering

Entity Relationship Diagram (aka ER Diagram, E-R Diagram, ERD) is a time-tested and widespread software development and software engineering method for data modeling, illustrating the logical structure of databases and system design. For ERDs construction are used three basic elements: entities, attributes, and relationships. Chen's notation for ERD supposes the use of rectangles (boxes) to represent entities and diamonds to depict relationships between first-class objects. This notation is popular when creating conceptual data models of information systems. Another standardized notation for ER diagrams is Crow's foot notation. ConceptDraw PRO as a powerful Entity Relationship Diagram software engineering provides the tools of Entity-Relationship Diagram (ERD) solution from Software Development area of ConceptDraw Solution Park for instantly describing databases using ERDs of Crow’s Foot and Chen’s notations. Use the predesigned vector elements for both these notations from 2 libraries included to Entity-Relationship Diagram (ERD) solution. Read more

Example of DFD for Online Store (Data Flow Diagram) DFD Example

Data Flow Diagram (DFD) is a methodology of graphical structural analysis and information systems design, which describes the sources external in respect to the system, recipients of data, logical functions, data flows and data stores that are accessed. DFDs allow to identify relationships between various system's components and are effectively used in business analysis and information systems analysis. They are useful for system’s high-level details modeling, to show how the input data are transformed to output results via the sequence of functional transformations. For description of DFD diagrams are uses two notations — Yourdon and Gane-Sarson, which differ in syntax. Online Store DFD example illustrates the Data Flow Diagram for online store, the interactions between Customers, Visitors, Sellers, depicts User databases and the flows of Website Information. ConceptDraw PRO enhanced with Data Flow Diagrams solution lets you to draw clear and simple example of DFD for Online Store using special libraries of predesigned DFD symbols. Read more

data flow diagram, DFD templates Data Flow Diagrams (DFD)

Data Flow Diagrams solution extends ConceptDraw PRO software with templates, samples and libraries of vector stencils for drawing the data flow diagrams (DFD). Read more
data flow diagram, DFD templates

3D Network Diagram Software

3D diagrams give more visuality, they are more impressive, attractive, interesting, understandable, and look better than general 2D diagrams. ConceptDraw PRO supplied with Computer Network Diagrams solution from Computer and Networks area of ConceptDraw Solution Park is a powerful vector-based network diagramming software with useful and convenient tools for drawing 2D and 3D Network Diagrams by both professional engineers and designers, and beginners. Including a lot of predesigned 3D network elements and 3D icons of computer and network devices for customizing your Network diagrams, this solution lets to visually communicate computer networks architecture, topology and design, to simplify and accelerate understanding, analysis and representation, and easily design 3D computer communication network architecture, topology, logic and wiring diagrams, 3D LAN and WAN schematics, drawings and maps. Design easily the 3D diagrams of any types and styles, freely combine the 3D objects in any way you desire. Read more