What is Entity-Relationship Diagram
A database is a data collection, structured into some conceptual model. Two most common approaches of developing data models are:
- UML diagrams
- ER-model diagrams.
What is Entity-Relationship Diagram? Entity relationship diagrams look very similar to 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.
Example 1. What is Entity-Relationship Diagram, Crow's foot notation
Creating an entity relationship diagram requires using a specific notation. There are several notations of entity-relationship diagram symbols and their meaning is slightly different. Five main components of common ERD notations are Entities, Actions, Attributes, Cardinality and Connections.
Example 2. What is Entity-Relationship Diagram, Chen's notation
The two of notations most widely used for creating Entity-Relationship Diagrams are:
- Chen's notation
- Crow's foot notation.
Crow’s Foot notation is quite descriptive and easy to understand, meanwhile, the Chen notation is great for conceptual modeling. By the way, the Crow's foot notation originates from the Chen's notation - it is an adapted version of the Chen's notation.
Professional ERD drawing implies knowing of ERD symbols and meanings. Entity-Relationship Diagram (ERD) solution from Software Development area of ConceptDraw Solution Park includes icons advocated by Chen's and Crow’s Foot notation that can be used when describing a database.
Example 3. ERD Libraries
In Entity-Relationship Diagram (ERD) solution for ConceptDraw DIAGRAM all entity relationship diagram symbols and meaning, work flow shapes, and entity relationship stencils have easy to understand labels helps you while building Entity Relationship Diagram.
Example 4. Entity-Relationship Diagram Symbols
The Entity-Relationship Diagram (ERD) solution from ConceptDraw Solution Park extends ConceptDraw DIAGRAM ector graphics and diagramming software with the ability to describe a database using the Entity-Relationship model. Use it to draw with pleasure your own professional-looking Entity-Relationship Diagrams using Chen's or Crow's foot 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 or later users.
TEN RELATED HOW TO's:
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
Process mapping helps with sharing business results and reorganizing workflow. In almost every case, after creating a sales process flowchart the steps that are redundant become obvious for a manager. It's easy to find a flowchart examples that will help in developing one for your business.
This sales process flowchart consists of a sequence of steps that represent a simple sale process. Each step is shown graphically by a rectangle representing processing steps or an activity, or a diamond representing a decision. These rectangles are linked by arrows, that indicate the direction of the sales workflow. ConceptDraw Sales Flowcharts solution delivers a the full set of classical flowchart notation symbols, along with sales-related icons and pictograms.
Picture: Sales Process Flowchart. Flowchart Examples
Using diagrams, you can visualize the flow of the information or build a detailed data structure. There's no need to have a degree in software and database design with ConceptDraw DIAGRAM , because this software has all the tools needed in developing models and diagrams. Project planning, designing and prototyping was never so easy.
This UML diagrams can be used to visualize a model of the data base development process. A UML diagram shows a graphical view of a structure of software system: components and relationships.
Using Unified Modeling Language helps to depict logical and physical elements of a data base, visually represent requirements and sub-systems. UML diagrams allows developers to organize and predict critical issues, as well as collaborate data base information.
Picture: Software and Database Design with ConceptDraw DIAGRAM
ConceptDraw Value Stream Mapping solution extends software with templates, samples and vector shapes for drawing Value Stream Maps (VSM).
Picture: Standard Shapes for Value Stream Mapping
ConceptDraw gives the ability to draw Flowchart documents. Flowcharts solutionis a powerful tool that extends ConceptDraw application for drawing business flowcharts.
ConceptDraw DIAGRAM vector diagramming and business graphics software enhanced with with templates, green and interactive flowchart makers, samples and stencil libraries from ConceptDraw Solution Park which all focused to help with drawing flowcharts, block diagrams, bar charts, histograms, pie charts, divided bar diagrams, line graphs, area charts, scatter plots, circular arrows diagrams, Venn diagrams, bubble diagrams, concept maps, and others.
Picture: The Best Flowchart Software Available
A family evening in a restaurant can be just charming, the problem is to find a one. If you spend an extra day to create a good restaurant floor plan, that will surely brings more clients. By the time your restaurant gets more popular, don’t forget about the quality of service.
The restaurant floor plan you see on this page was made with ConceptDraw DIAGRAM in accompanied with Cafe and Restaurant Plans solution. It introduces facilities of the solution and demonstrates the results, you can obtain if you deploy ConceptDraw tools for generating floor plans and interior designs for cafe, restaurants or other catering establishments. A little less than three hundred vector objects, and a set of built-in templates and a set of examples will maintain your creativeness.
Picture: Restaurant Floor Plans
Teams working with Scrum methodology use the product backlog items (PBIs), bug work item types (WITs), reports and dashboards. SCRUM Workflow solution for ConceptDraw DIAGRAM software offers collection of samples, variety of predesigned objects, clipart and graphic elements, a set of Scrum process work items and workflow which are developed for agile teams working using Scrum.
Picture: Scrum process work items and workflow
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