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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

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 PRO 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)
"Chen's notation for entity–relationship modeling uses rectangles to represent entity sets, and diamonds to represent relationships appropriate for first-class objects: they can have attributes and relationships of their own. If an entity set participates in a relationship set, they are connected with a line.
Attributes are drawn as ovals and are connected with a line to exactly one entity or relationship set.
Cardinality constraints are expressed as follows:
- a double line indicates a participation constraint, totality or surjectivity: all entities in the entity set must participate in at least one relationship in the relationship set;
- an arrow from entity set to relationship set indicates a key constraint, i.e. injectivity: each entity of the entity set can participate in at most one relationship in the relationship set;
- a thick line indicates both, i.e. bijectivity: each entity in the entity set is involved in exactly one relationship.
- an underlined name of an attribute indicates that it is a key: two different entities or relationships with this attribute always have different values for this attribute.
Attributes are often omitted as they can clutter up a diagram; other diagram techniques often list entity attributes within the rectangles drawn for entity sets." [Entity–relationship model. Wikipedia]
The vector stencils library ERD, Chen's notation contains 13 symbols for drawing entity-relatinship diagrams using the ConceptDraw PRO diagramming and vector drawing software.
The example "Design elements - ER diagram (Chen notation)" is included in the Entity-Relationship Diagram (ERD) solution from the Software Development area of ConceptDraw Solution Park.
Chen's ERD
Chen's ERD, week key attribute, weak entity, relationship, multivalue attribute, key attribute, identifying relationship, entity, derived attribute, attribute, associative entity,

Data structure diagram with ConceptDraw PRO

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 PRO.

IDEF0 standard with ConceptDraw PRO

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.

enterprise architecture diagram, business architecture Enterprise Architecture Diagrams

enterprise architecture diagram, business architecture
Enterprise Architecture Diagrams solution extends ConceptDraw PRO software with templates, samples and library of vector stencils for drawing the diagrams of enterprise architecture models.

fault tree analysis, fishbone diagram, cause and effect diagrams, fault tree analysis software, fault tree analysis example Fault Tree Analysis Diagrams

fault tree analysis, fishbone diagram, cause and effect diagrams, fault tree analysis software, fault tree analysis example
This solution extends ConceptDraw PRO v9.5 or later with templates, fault tree analysis example, samples and a library of vector design elements for drawing FTA diagrams (or negative analytical trees), cause and effect diagrams and fault tree diagrams.

Process Flowchart

The main reason of using Process Flowchart or PFD is to show relations between major parts of the system. Process Flowcharts are used in process engineering and chemical industry where there is a requirement of depicting relationships between major components only and not include minor parts. Process Flowcharts for single unit or multiple units differ in their structure and implementation. ConceptDraw PRO is Professional business process mapping software for making Process flowcharts, Process flow diagram, Workflow diagram, flowcharts and technical illustrations for business documents and also comprehensive visio for mac application. Easier define and document basic work and data flows, financial, production and quality management processes to increase efficiency of your business with ConcepDraw PRO. Business process mapping software with Flowchart Maker ConceptDraw PRO includes extensive drawing tools, rich examples and templates, process flowchart symbols and shape libraries, smart connectors that allow you create the flowcharts of complex processes, process flow diagrams, procedures and information exchange. Process Flowchart Solution is project management workflow tools which is part ConceptDraw Project marketing project management software. Drawing charts, diagrams, and network layouts has long been the monopoly of Microsoft Visio, making Mac users to struggle when needing such visio alternative like visio for mac, it requires only to view features, make a minor edit to, or print a diagram or chart. Thankfully to MS Visio alternative like ConceptDraw PRO software, this is cross-platform charting and business process management tool, now visio alternative for making sort of visio diagram is not a problem anymore however many people still name it business process visio tools.
How To Create a Process Flow Chart (business process modelling techniques)
How To Create a Process Flow Chart (business process modelling techniques)

interactive voice response system, IVR Interactive Voice Response Diagrams

interactive voice response system, IVR
Interactive Voice Response Diagrams solution extends ConceptDraw PRO v10 software with samples, templates and libraries of ready-to-use vector stencils that help create Interactive Voice Response (IVR) diagrams illustrating in details a work of interactive voice response system, the IVR system’s logical and physical structure, Voice-over-Internet Protocol (VoIP) diagrams, and Action VoIP diagrams with representing voice actions on them, to visualize how the computers interact with callers through voice recognition and dual-tone multi-frequency signaling (DTMF) keypad inputs.

metro maps, subway map, mta subway map, metro train map, metro path map, subway train map Metro Map

metro maps, subway map, mta subway map, metro train map, metro path map, subway train map
Metro Map solution extends ConceptDraw PRO software with templates, samples and library of vector stencils for drawing the metro maps, route maps, bus and other transport schemes, or design tube-style infographics.

graphical user interface, UI patterns, GUI interface iPhone User Interface

graphical user interface, UI patterns, GUI interface
iPhone User Interface solution extends ConceptDraw PRO v10 software with templates, samples and libraries with large quantity of vector stencils of graphical user interface elements, Apps icons, UI patterns for designing and prototyping of the iOS applic

football, american football, football field, american football field, football field dimensions, offense, defense, football plays, football diagram Football

football, american football, football field, american football field, football field dimensions, offense, defense, football plays, football diagram
The Football Solution extends ConceptDraw PRO v9.5 (or later) software with samples, templates, and libraries of vector objects for drawing football (American) diagrams, plays schemas, and illustrations. It can be used to make professional looking documen

How to Build Cloud Computing Diagram Principal Cloud Manufacturing

The term “cloud” is very popular and widely used now, it is a server, data processing centre, or a network which lets to store the data and software, provides access to them, allows to run applications without installation and gives the possibility to process data hosted remotely via the Internet connection. For documenting the Cloud Computing Architecture with a goal to facilitate the communication between stakeholders are successfully used the Cloud Computing Architecture diagrams. It is convenient and easy to draw various Cloud Computing Architecture diagrams in ConceptDraw PRO software with help of tools of the Cloud Computing Diagrams Solution from the Computer and Networks Area of ConceptDraw Solution Park.

Sequence Diagram for Cloud Computing

One of the ways effectively visualize what is a Cloud computing or Cloud computing architecture, is to create the Sequence diagram for Cloud computing. The ConceptDraw PRO diagramming and vector drawing software enhanced with Cloud Computing Diagrams solution from the Computers and Network area of ConceptDraw Solution Park will help you design all desired types of diagrams related with cloud computing.