Entity Relationship Diagram Software
Software for diagramming
ConceptDraw DIAGRAM gives the ability to draw professional ER diagrams (ERD) for describing a databases visually with the Chen's and Crow’s Foot notation icons. Use for this the powerful tools of the Entity-Relationship Diagram (ERD) Solution from the Software Development Area for ConceptDraw Solution Park.
Entity-Relationship model making possibility to describe a database by abstract way. The data in database tables can be the point to data in other tables - for instance, your entry in the database could point to several entries.
Example 1. Entity Relationship Diagram Software
What are Entity Relationship Diagrams?
Entity relationship diagram (ERD) is a graphical representation the logical structure of the relational databases, the entities and their relationships in a database. The ERDs are created in the process of the Entity-relationship modeling. It is the most important software engineering method for database modeling.
ERD contains three types of the elements: entities that represent the items on which people look for the information, attributes that represent the data related to the entities and relationships that assure a structure for the information.
There are several notations for drawing ERDs of any complexity, the most often are used the Chen's and Crow’s Foot notations.
Chen's notation represents entities as rectangles, and relationships appropriate for first-class objects as diamonds. 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.
Example 2. Entity relationship diagram (ERD), Chen's notation
Crow's Foot notation uses boxes to represent entities, and lines between the boxes to represent relationships. Different shapes at the ends of these lines represent the cardinality of the relationship. Attributes of entity are drawn in the box that represents the entity.
Example 3. Entity relationship diagram (ERD), Crow's Foot notation
The following features make ConceptDraw DIAGRAM extended with Entity-Relationship Diagram (ERD) solution the best Entity Relationship Diagram Software:
- You don't need to be an artist to draw professional looking diagrams in a few minutes.
- Large quantity of ready-to-use vector objects makes your drawing diagrams quick and easy.
- Great number of predesigned templates and samples give you the good start for your own diagrams.
- ConceptDraw DIAGRAM provides you the possibility to use the grid, rules and guides. You can easily rotate, group, align, arrange the objects, use different fonts and colors to make your diagram exceptionally looking.
- All ConceptDraw DIAGRAM documents are vector graphic files and are available for reviewing, modifying, and converting to a variety of formats: image, HTML, PDF file, MS PowerPoint Presentation, Adobe Flash, MS Visio.
- Using ConceptDraw STORE you can navigate through ConceptDraw Solution Park, managing downloads and updates. You can access libraries, templates and samples directly from the ConceptDraw STORE.
- If you have any questions, our free of charge support is always ready to come to your aid.
SEVEN RELATED HOW TO's:
When thinking about data visualization, one of the first tools that comes to mind is a flowchart design. You can find flowchart symbols, shapes, stencils and icons easily on the Internet, but it might take time to systematize this information. Nevertheless, once you start flowcharting, you’ll love its simplicity and efficiency.
This diagram consists from standard flowchart symbols, approved by ANSI (American National Standard Institute) for drawing flowcharts. A flowchart is a diagram that represents a step-by-step algorithm of any process, displaying the process stages as boxes that are connected with arrows. Flowchart design makes it clear and readable.
Flowchart designed using ConceptDraw DIAGRAM flowchart software allows to make attractive and clear process presentation, it makes interpretation of the business process flow fresh and versatile. Great flowchart design view is a big advantage over the diagram created manually on a paper.
Picture: Flowchart design. Flowchart symbols, shapes, stencils and icons
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 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.
Picture: Entity Relationship Diagram Software for Mac
ER diagram is the most popular database design tool which lets create graphical representations of database tables, their columns and also relationships. As for the Mac users, they are very interested in powerful database diagramming tools and ER diagram tool for OS X to design professional looking E-R Diagrams and ERD drawings. ConceptDraw DIAGRAM software on Mac OS X gives the ability to easy draw ERDs.
Picture: ER diagram tool for OS X
To visualize the relationships between subsets of the universal set you can use Venn diagrams. To construct one, you should divide the plane into a number of cells using n figures. Each figure in the chart represents a single set of, and n is the number of represented sets. Splitting is done in a way that there is one and only one cell for any set of these figures, the points of which belong to all the figures from the set and do not belong to others. The plane on which the figures are represented, is the universal set U. Thus, the point which does not belong to any of the figures, belongs only to U.
Picture: Multi Layer Venn Diagram. Venn Diagram Example
A waterfall model describes software development process as a sequence of phases that flow downwards. SSADM is one of the implementations of waterfall method. It’s easier to learn about structured systems analysis and design method (SSADM) with ConceptDraw DIAGRAM because this software has appropriate tools for creating data flow diagrams. You can use all the three main techniques of SSADM method with special tools and predesigned templates.
This data flow diagram illustrates the Structured Systems Analysis and Design Method. This method method considers analysis, projecting and documenting of information systems. Data flow models are the most important elements of SSADM and data flow diagrams are usually used for their description. It includes the analysis and description of a system as well as visualization of possible issues.
Picture: Structured Systems Analysis and Design Method. SSADM with ConceptDraw DIAGRAM
The entity–relationship (ER) model is a data model that lets graphically represent the information system and depict the relationships between people, objects, concepts, places, and events within a given system. It is also convenient to use the ER Diagram for Cloud computing representation and description the Cloud computing architecture, design them with pleasure using the extensive tools of the Cloud Computing Diagrams solution from the Computers and Network area of ConceptDraw Solution Park.
Picture: ER Diagram for Cloud Computing
When creating ER diagrams, you can apply different color ER diagram styles and also notation styles. ConceptDraw DIAGRAM enhanced with Entity-Relationship Diagram (ERD) Solution gives the ability to draw visual and attractive ER Diagrams using the style icons from Crow’s Foot notation and Chen's notation professionally designed and offered by ERD Chen's Notation and ERD Crow’s Foot Notation libraries.
Picture: ER Diagram Styles