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ERD Symbols and Meanings

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)

Entity Relationship Diagram Symbols

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.
The vector stencils library "Marketing" contains 30 marketing icons.
Use it to design your business and finance illustrations and infographics with ConceptDraw PRO diagramming and vector drawing software.
The vector stencils library "Marketing" is included in the Business and Finance solution from the Illustration area of ConceptDraw Solution Park.
Target
Target, target,
International sales
International sales, globe, international sales,
Shopping cart
Shopping cart, shopping cart,
Sign post
Sign post, sign post,
Pointing hand
Pointing hand, pointing hand,
First place
First place, first place,
Market label
Market label, market label, badge,
Umbrella
Umbrella, umbrella,
Balance scales
Balance scales, balance scales,
Rocket
Rocket, rocket,
Airplane
Airplane, airplane,
Truck
Truck, truck,
Train
Train, train, subway,
Ship
Ship, ship,
Oil extraction
Oil extraction, oil extraction,
Oil barrel
Oil barrel, oil barrel,
Wooden barrel
Wooden barrel, wooden barrel,
Empty box
Empty box, empty box,
Full box
Full box, full box,
Building blocks
Building blocks, building blocks,
Stack of papers
Stack of papers, stack of papers,
Clipboard
Clipboard, clipboard,
Sunglasses
Sunglasses, sunglasses,
Thermometer
Thermometer, thermometer,
Question mark
Question mark, question mark,
Check mark
Check mark, check mark,
Cross mark
Cross mark, cross mark,
NO sign
NO sign, no sign,
Warning sign
Warning sign, warning sign,
Stop sign
Stop sign, stop sign,
Used Solutions

Piping and Instrumentation Diagram Software

Piping and Instrumentation Diagram Software
Piping and Instrumentation Diagram is a technical sketch or drawing, which shows in details the piping system and instrumentation of a processing plant. Piping and Instrumentation Diagram is developed by process design engineers and technical engineers on the phase of plant design. This plan is necessary on the stages of plant construction and then is actively used by operators, instrumentation and piping engineers when operating the plant. ConceptDraw DIAGRAM software provides unique Plumbing and Piping Plans solution from Building Plans area of ConceptDraw Solution Park with 10 libraries of ready-to-use predesigned vector elements, templates and samples, to help you create professional Piping diagrams and schematics, Instrumentation diagrams, Plumbing plans and blueprints, Schemes of hot and cold water supply systems, Heating schemes, Mechanical diagrams, Diagrams of fluids, hydraulics, air and gas pipings, Technical drawings of waste water disposal systems, Schematics of industrial piping systems, Diagrams of ventilation systems, etc.

Design Data Flow. DFD Library

Data flow diagram or DFD is a type of diagrams used for graphical representation the "flow" of data through an information system, for effective modeling its process aspects and for visualization the data processing. They are one of the best tools for clearly making an overview of the system that will be developed, for depiction in details what kinds of information will be inputted to the system and outputted from it, where they will be stored, and other details. ConceptDraw DIAGRAM software with Data Flow Diagrams solution from Software Development area of ConceptDraw Solution Park is powerful in a field of designing the DFDs. Three libraries containing 49 vector DFD shapes and symbols are offered by Data Flow Diagrams (DFD) solution. Use them to design data flow diagrams, information flow diagrams, data flowcharts, data process diagrams, structured analysis diagrams, to create the data-oriented models or process-oriented models, and so on. Pay also attention for the included collection of DFD samples, examples and built-in templates at ConceptDraw STORE.