Entity-Relationship Diagram (ERD)

Entity-Relationship Diagram (ERD) solution extends ConceptDraw DIAGRAM software with templates, samples and libraries of vector stencils from drawing the ER-diagrams by Chen's and crow’s foot notations.

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

ER-model is a data model which lets describe the conceptual schemes in a specific subject area. It can help to highlight the key entities and specify relationships that can be established between these entities. During the database design, it is realized the transformation of ER model into certain database scheme based on the chosen data model (relational, object, network, etc.). There are used two notations for ERDs: Crow's Foot and Chen's. Crow's Foot notation proposed by Gordon Everest represents the entity by rectangle containing its name (name must be unique within this model), and relation - by the line which links two entities involved in relationship. The relationship's plurality is graphically indicated by a "plug" on the end of the link, the optionality - by a circle. Entity-Relationship Diagrams based on Crow's Foot notation can be easily drawn using the ConceptDraw DIAGRAM. Extended with Entity-Relationship Diagram (ERD) solution, it is the best ERD diagrams software with powerful tools and ready design elements for Crow's Foot and Chen notations.

How to Build an Entity Relationship Diagram (ERD)

Entity-Relationship Diagram (ERD) with ConceptDraw DIAGRAM

Entity-Relationship Diagram (ERD) is applied for detailed description of structures and high-level (conceptual) design databases using the Chen's and Crow's Foot notations. An ERD represents a diagram constructed mainly of rectangular blocks (for entities, data) linked with relationships. The links between the blocks are used to describe relations between the entities. There are three types of relationships: one-to-one, one-to-many, and many-to-many. Use the specialized ERD software - ConceptDraw DIAGRAM to create the Entity-Relationship Diagrams (ERDs) of any degree of complexity with Chen's and Crow's Foot notations. Draw them easily applying the powerful built-in tools and libraries of predesigned ERD vector objects from Entity-Relationship Diagram (ERD) solution from the Software Development area of ConceptDraw Solution Park. You can also start with one of ready template or sample included to this solution. Designing the ERDs in ConceptDraw DIAGRAM you can easy move the objects within a diagram with saving the relationships between them.

How to Build an Entity Relationship Diagram (ERD)

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)

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How to Create an Entity-Relationship Diagram

ERD (entity relationship diagram) is used to show the logical structure of databases. It represents the interrelationships between components of a database (entities). Entity relationship diagrams are widely used in software engineering. Using ERD software engineers can control every aspect of database development. ER diagram can be used as the guide for testing and communicating before the release of a software product. ERD displays data as entities that are connected with connections that show the relationships between entities. There are some ERD notations used by databases developers for representing the relationships between the data objects. ConceptDraw DIAGRAM and its ERD solution allow you to build ERD diagram of any notation.

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How to Create a Venn Diagram

Venn diagrams were invented by John Venn as a method of depicting relationships between different components. A Venn diagram consists of two or more circles. Each circle represents a specific group or set. The entities which are depicted by circles generally have some common characteristics. A Venn Diagram shows all the possible logical relations between these entities. Any properties that belong to more than one set should be indicated in the sections where the circles overlap. A Venn Diagram can be useful to visually summarize the status and future viability of a project. ConceptDraw DIAGRAM allows you to make Venn diagrams using the Venn Diagrams solution.

Software Development Area

Solutions from the Software Development Area of ConceptDraw Solution Park collect templates, samples and libraries of vector stencils for drawing the software engineering diagrams and user interface design prototypes.

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How to Create a Concept Map

The graphical technique of knowledge representation in the form of structured networks of concepts (ideas) is called concept mapping. Concept network consists of shapes that represent concepts and connectors representing relationships between concepts. The difference between mind maps and concept maps is that a mind map has only one object depicting the main idea, while a concept map may have several. Concept mapping is used to structure ideas, to communicate a complex system of knowledge, to help the learning process, etc. ConceptDraw DIAGRAM allows you to draw concept maps using the Concept Map solution.

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How to Draw a Block Diagram

Block diagram is a simple chart that use blocks to show some elements or activities, and connectors that show the relationship between neighboring blocks. They are commonly simple, giving an overview of a process without necessarily going into the specifics of implementation. Block diagrams are commonly used to depict a general description of a system and its activity. A most known sample of a block diagram is a flow chart, used in many types of business as a common method of representing repeated processes. Easy and a simple creation, a number of objects and connectors make the block diagram a many-sided tool for various industries. The ability to make block diagrams is delivered by the ConceptDraw Block Diagrams solution.

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How to Create a Bubble Diagram

Bubble Diagram is a simple chart that consists of circles (bubbles) repesening certain topics or processes. Bubbles are connected by lines depicting the type of relationships between the bubbles. The size of each bubble is depended on the importance of the entity it represents. Bubble charts are widely used throughout social, economical, medical, and other scientific researches as well as throughout architecture and business management. Bubble charts are often used during the early stages of product development to visualize thoughts and ideas for the purpose of sketching out a development plan. ConceptDraw DIAGRAM allows you to draw a bubble diagrams using the Bubble Diagrams solution.

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How to Add a Concept Map to a PowerPoint Presentation

Concept maps visually present the relationships among a set of logically connected items. ConceptDraw DIAGRAM allows you to draw concept maps using the Concept Map solution. The PowerPoint presentation of key concept points can be very informative and helpful.

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How To Create a Concept Map in Visio

ConceptDraw DIAGRAM allows you to easily create concept maps and then make an MS Visio file from your diagrams in a few simple steps.

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How To Create Visio Bubble Chart

ConceptDraw DIAGRAM allows you to easily create business charts and diagrams of any complexity, including the bubbles diagram and then make a MS Visio file from your diagram in a few simple steps.

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How to Add a Bubble Diagram to MS Word

A bubble chart is a diagram in which the data points are replaced with bubbles, and the size of the bubbles represents some additional dimension of the data. A bubble chart does not have the axis. A bubble chart can be used instead of a scatter diagram if the data has three dimensions, each of that containing the set of values. The sizes of the bubbles are determined by the values in the third dimension. Any additional information about the entities beyond their three primary dimensions can be depicted by rendering bubbles in colors and patterns that are selected in a certain way. The legend containing the further information can be added to a bubble diagram. ConceptDraw DIAGRAM allows you to easily create various business management and marketing charts, including bubble diagrams and then add them to a MS Word document.

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How to Add a Bubble Diagram to PowerPoint Presentation

Bubble diagrams can be used to compare concepts, and identify areas of similarity and difference. ConceptDraw DIAGRAM allows you to make a MS PowerPoint Presentation from your charts in a few simple steps.