Design Element: Crows Foot
for Entity Relationship Diagram - ERD

Entity-relationship Diagram (ERD) is a perfect tool which lets execute the detalization of data warehouse for designed system, as well as documenting the entities of the system and their interactions each other, including the identification of important domain objects (entities), the properties of these objects (attributes) and their relationships to other objects.

Creating an ERD requires choosing a specific set of notations that best serve the specific database being designed. Chen’s original notation had a linguistic approach, where boxes representing entities could be thought of as nouns, and the relationships between them were in verb form, shown on a diagram as a diamond.

Eventually Chen’s style was adapted into the Crow’s Foot notation, where relationships were shown as single labeled lines – this quickly became the popular standard, due to improved readability on diagrams, with a more efficient use of space on the page.

ConceptDraw DIAGRAM v12 software extended with Entity-Relationship Diagram (ERD) solution from Software Development area of ConceptDraw Solution Park allows you to draw ER diagrams for depicting a database using the ERD diagram design element Crow's Foot - Crow′s Foot notation icons.

Entity Relationship Diagram, Design Elements - Crows Foot  (Win Mac)

Example 1. Design Elements — Crow's Foot (Mac OS X, Windows) for Entity Relationship Diagrams

The Entity-Relationship Diagram (ERD) solution offers also a lot of samples of ER Diagrams of Crow's Foot and also Chen's notations, and two templates providing useful quick start. All they are professional looking, stylish and attractive and are proposed for using from ConceptDraw STORE.

entity relationship diagram solution, examples and template

Example 2. Entity Relationship Diagrams solution, examples and template

The samples you see on this page were created in ConceptDraw DIAGRAM v12 software using the Entity-Relationship Diagram (ERD) solution and show the ER Diagrams created with Crow's Foot notation. An experienced user spent 10 minutes creating these samples.

Use the Entity-Relationship Diagram (ERD) Solution for ConceptDraw DIAGRAM v12 to create quick and easy your own ERDs using the Crow's Foot and Chen's notations.

All source documents are vector graphic documents. They are available for reviewing, modifying, or converting to a variety of formats (PDF file, MS PowerPoint, MS Visio, and many other graphic formats) from the ConceptDraw STORE. The Entity-Relationship Diagram (ERD) Solution is available for all ConceptDraw DIAGRAM v12 or later users.




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TEN RELATED HOW TO's:

Entity Relationship Diagram - ERD - Software for Design Crows Foot ER Diagrams

There are many ways to describe a database structure. One of the most usual is to draw an entity relationship diagram (ERD) using a Crow’s Foot notation to represent database elements. If you don’t want to draw it on paper, you should use an appropriate software. An entity-relationship (ER) diagram is used to show the structure of a business database. ERD represents data as objects (entities) that are connected with standard relationships symbols which Illustrate an association between entities. ERD, there is a wide range of ERD notations used by data bases architects for reflecting the relationships between the data entities. According to the crow’s foot notation relationships are drawn as single labeled lines designating a certain kinds of relationship. Crow foot notation is a most frequently used ERD standard, because of improved readability of diagrams, with a more accurate use of space on the page.Entity Relationship Diagram Software, Design Elements - Crows Foot (Windows, Macintosh)
Picture: Entity Relationship Diagram - ERD - Software for Design Crows Foot ER Diagrams
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Entity Relationship Diagram Examples

An abstract representation is usually the first thing you will need while developing a database. To understand the ways that databases are structured, you should look through entity-relationship diagram examples and see the notations features and attributes. With an entity-relationship model you can describe a database of any complexity. This Entity-relationship diagram is a tool for software developers. It enables every element of database to be managed, communicated and tested before release. This ERD was created using symbols advocated by Chen's notation. Because of a linguistic origin of the Chen’s notation, the boxes representing entities could be interpreted as nouns, and the relationships between them are in verb form, shown on a diagram as a diamond.Entity Relationship Diagram Examples
Picture: Entity Relationship Diagram Examples
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ERD Symbols and Meanings

A database is a data collection, structured into some conceptual model. Two most common approaches of developing data models are UML diagrams and ER-model diagrams. There are several notations of entity-relationship diagram symbols and their meaning is slightly different. Crow’s Foot notation is quite descriptive and easy to understand, meanwhile, the Chen notation is great for conceptual modeling. An entity relationship diagrams look very simple to a flowcharts. The main difference is the symbols provided by specific ERD notations. There are several models applied in entity-relationship diagrams: conceptual, logical and physical. Creating an entity relationship diagram requires using a specific notation. There are five main components of common ERD notations: Entities, Actions, Attributes, Cardinality and Connections. The two of notations most widely used for creating ERD are Chen notation and Crow foot notation. By the way, the Crow foot notation originates from the Chen notation - it is an adapted version of the Chen notation.Entity Relationship Diagram Symbols and Meaning - crow
Picture: ERD Symbols and Meanings
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Example of DFD for Online Store (Data Flow Diagram)DFD Example

Structured-systems analysis and design method uses data flow diagrams to represent the process of data flowing through a system. Talking about this might be useless without a proper example of DFD for online store (Data Flow Diagram). This DFD example shows all the distinctness that a diagram can bring into a scattered data structure. Data flow diagrams are used to show how data is processed within some business processes. Making DFD is a common practice for business process modeling and analysis. This diagram represents the online store business flow. It describes inputs and outputs within online selling process and depicts the interactions between its participants. This DF diagram can be used by system analysts to create an overview of a business, to study and discover its inherent strengths and weak points.Online Store Data Flow Diagram
Picture: Example of DFD for Online Store (Data Flow Diagram)DFD Example
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Design Element: Chen for Entity Relationship Diagram - ERD

It is very difficult to get into database model idea without any examples. To create one, you can use Chen’s notation for Entity Relationship Diagrams (ERD) and try to see all the peculiarities yourself. This notation describes entities and relations as basic geometric shapes like rectangles and diamonds. Chen notation for Entity-relationship diagrams is used for designing relational databases. It depicts the database entities as a set of subjects. For example events, people, ideas, etc. All entities has common characteristics (attributes). Any object of the system is identified as the sole and unique. The name of entity should indicate the class or type of the the whole object, not a given example. The connection commonly represents a relationship between entities. Conceptdraw Entity-Relationship Diagrams (ERD) solution provides the libraries with ready-to-use ERD element fitting Chen's notation objects and relationships.ERD. Entity Relationship Diagram, Design Elements - Chen (Win Mac)
Picture: Design Element: Chen for Entity Relationship Diagram - ERD
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Cross-Functional Flowchart

There are many tools to manage a process or to illustrate an algorithm or a workflow. Flowcharting is one of those tools. However, it may be difficult to show complex processes that require multiple attributes or several people in a simple flowchart, so a cross-functional flowchart would be a solution for that situation. To create such flowchart, group processes and steps to labeled rows or columns, and divide those groups with horizontal or vertical parallel lines. It is worth mentioning that there are different types of cross-functional flowcharts, like opportunity or deployment flowchart. This diagram shows a cross-functional flowchart that was made for a trading process. It contains 14 processes, distributed through 5 lines depicting the participants who interact with the process. Also there are connectors that show the data flow of information between processes. The cross-functional flowchart displays a detailed model of the trading process, as well as all participants in the process and how they interact with each other. The lines in the flowchart indicates the position, department and role of the trading process participants.Cross-Functional Flowchart. flowchart maker
Picture: Cross-Functional Flowchart
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UML Component Diagram. Design Elements

UML Component Diagram illustrates show components are wired together to larger components and software systems that shows the structure of arbitrarily complex systems. Rapid UML Solution for ConceptDraw DIAGRAM v12 contains 13 vector stencils libraries with 393 interactive shapes that you can use to design your UML diagrams. To design a Component Diagram use the UML Component Diagram library. UML Component Diagram library contains 36 shapesUML Design Elements: Component (Win, Mac)
Picture: UML Component Diagram. Design Elements
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Gane Sarson Diagram

Describing the way data flows through an information system might become a subject of a study. One of the kinds on a data flow diagram is called Gane Sarson Diagram after its authors, and it slightly differs from other notations. Process symbols in this notation are depicted as rounded rectangles connected with arrows representing data flows. This is a sample of data flow diagram. It demonstrates utilization of the Gane-Sarson notation for making DFD on the example of an online appointment system of the Health Centre. This sample is used the vector objects library of Gane-Sarson DFD notation supplied by the ConceptDraw solution for data flow diagramming. It contains all symbols of the Gane-Sarson notation including connectors, jumps, and processes. This solution can be successfully utilized to generate DFDs for business documentation, and presentations.Gane Sarson Diagram
Picture: Gane Sarson Diagram

ConceptDraw DIAGRAM v12 ER Diagram Tool

Database design is an important part of any project, as databases become more and more complex nowadays. To make the model more representative, entity relationship diagrams are widely used in software engineering area. These diagrams show sets of entities as rectangles connected via lines labeled with their cardinalities. This an example of the ER-diagram developed to store information regarding some online role-playing game. It includes three main elements of ER diagram: entities, relationships and attributes. The entities, attributes and relationships on this ER-diagram is depicted according to the Chen's notation. Chen's notation for Entity Relationship diagrams admits using of rectangles to depict entities, ovals for attributes and ,at least, diamonds to show relationships . ConceptDraw Entity-Relationship Diagrams solution was applied as ERD software to create this diagram.ER Diagram Tool. Chen ERD
Picture: ConceptDraw DIAGRAM v12 ER Diagram Tool
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Entity Relationship Diagram Software for Mac

ER-modeling nowadays is a very popular approach for database design. If you are tired of looking for a good entity relationship diagram Software for Mac, then your search is almost over. ConceptDraw DIAGRAM v12 is a great tool for creating diagrams of any complexity with tons of editable samples and templates. This diagram represents the vector library of the Chen’s and Crow’s Foot notation icons for drawing ERD (entity-relationships diagram). ConceptDraw Entity Relationship Diagram solution delivers the ability to visualize databases structure on both Mac and PC. The "bricks" entity-relationships models are the entity, and the relation. An entity is represented by a rectangle comprising the entity name. It means an object, information about which should be available and stored. A relation is intended to show a relations between two entities. There are several types of relations between entities. To show there are a number of different symbols for the types of relationships.Entity Relationship Diagram Software for Mac
Picture: Entity Relationship Diagram Software for Mac
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