ER Diagram Styles

When creating ER diagrams, you can apply different color ER diagram styles and also notation styles:

  • Chen style
  • Crow's foot style
  • Martin style
  • Bachman style
  • Information Engineering Style, and others.

ConceptDraw PRO enhanced with Entity-Relationship Diagram (ERD) Solution from the Software Development Area for ConceptDraw Solution Park is the best ERD diagramming and vector drawing software. It 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.

ER Diagram Styles

Example 1. ER Diagram Styles, ConceptDraw PRO software (Win, Mac)

Use ConceptDraw professional styling options, the Line, Fill, Shadow and Text tools to format the ER diagram objects and make your own diagram of the preferred style.

Entity-Relationship Diagram (ERD) solution offers a lot of ERD samples of different ER diagram styles, and also quick-start ERD templates. All they are professional looking, have the intuitive ER style and are proposed for using from ConceptDraw STORE.

Entity-Relationship Diagram (ERD) Solution

Example 2. Entity-Relationship Diagram (ERD) Solution

The samples you see on this page were created in ConceptDraw PRO using the libraries from Entity-Relationship Diagram (ERD) Solution. An experienced user spent 10-15 minutes creating each of these samples. You can find them at ConceptDraw STORE.

Use the Entity-Relationship Diagram (ERD) Solution for ConceptDraw PRO to create your own Entity-Relationship Diagrams of various ERD styles quick, easy and effective.

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 PRO v10 users.

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Entity Relationship Diagram Symbols

When we start to speak about databases, we must always mention database structure visualization. One of the most common ways to do it is to create an entity relationship diagram, and to put appropriate symbols on it. It is important either for database projecting and for its' future maintenance. Entity Relationship Diagram describes data elements and their relationships within a database. There are a set of special symbols that depict each element of an entity relationship diagram. Entities - represents some stable components such as supplier, employee, invoice, client, etc. Relation symbols show how the entities interact. Attributes define characteristics of the relationships. Attributes can be one-to-one or many-to-many. Physical symbols is used in the physical models. They represent items such as fields, tables, types and keys. ERD physical symbols are the building material for the database. Notation lines are used to illustrate the relationships. The most common method is Crow’s Feet notation. You can use ConceptDraw Entity-Relationship Diagram (ERD) solution to represent a database using the Entity-Relationship model.Entity Relationship Diagram Symbols
Picture: Entity Relationship Diagram Symbols
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Components of ER Diagram

It is easy to recreate any informational system structure using diagrams. There are three main components of any ER diagram: entity, attribute and relationship. Basing on these three components, one can define other, less used elements, such as weak entity or relationship, derived attribute, recursive relationship etc. This is the set of graphic elements of ERD Chen's notation. This ERD notation is used to represent an entity–relationship models. It involves the set of geometric forms: rectangles - depicting entities, ovals - representing attributes and diamonds depicting relationships assigned for first-class objects, that can have relationships and attributes of their own. Connections are displayed with arrowed lines. It is known that the Chen's ERD notation is used to show a detailed view of entities and relationships. ConceptDraw Entity-Relationship Diagram solution from the Software Development section of Solution Park provides the ability to create ERD of database structure for software development purposes using the Chen’s notation elements.Components of ER Diagram
Picture: Components of ER Diagram
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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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Express-G Diagram

The vector stencils library from the solution Information Model Diagrams contains specific data type symbols of the EXPRESS-G notation such as entity data type symbols, simple data type symbols, enumeration data type symbols, defined data type symbols, select data type symbols and specific attribute symbols for ConceptDraw PRO diagramming and vector drawing software. The Information Model Diagrams solution is contained in the Software Development area of ConceptDraw Solution Park.Express-G Diagram - Family Scheme
Picture: Express-G Diagram

Drawing ER diagrams on a Mac

Database model is a graphic representation need at the beginning of project development. You won't have any problems with drawing ER diagrams on a Mac anymore with ConceptDraw PRO application. Special libraries that contain all the symbols of both Chen's and Crow’s foot notation allow you to start database modeling within a few minutes. Creating entity-relationship diagrams on Mac is fun and effortless when you use a software designed for professional ERD drawing tailored to specific characteristics of Apple OS X. ConceptDraw PRO is a business diagramming software for those using OS X. The Entity-Relationship Diagrams solution for ConceptDraw has 2 libraries containing about 50 vector icons, depicting ERD symbols of the most popular Chen's and Crow’s Foot Notations. The other valuable component of the solution is a collection of ERDs samples and templates that can be opened on Macs and PCs.Drawing ER diagrams on a Mac
Picture: Drawing ER diagrams on a Mac
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ConceptDraw PRO 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 PRO ER Diagram Tool
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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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Types of Flowcharts

A flowchart is a simple but very functional tool when it comes to understanding a workflow or to removing unnecessary stages from a process. When drawing flowcharts, keep in mind that there are four common types of flowcharts, like document flowcharts and data flowcharts that show control over a data or document flow over a system. To show controls on a physical level, use system flowcharts. In addition, to show controls in a program, you can draw a program flowchart. This flowchart diagram represents the piece of an article editing process, that involves the author and editor. It was created using the Basic Flowchart notation that consists from the basic flowchart symbols. The start and the end of the process are indicated with "Terminator" symbols. The "Process" symbols show the action steps consisting from making edits and searching for a compromise, when the author does not agree with the suggestions of the editor . The "Process" symbol is the general symbol in process flowcharts. The "Decision" symbol indicates a branching in the process flow. There are two branches indicated by a Decision shape in the current flowchart (Yes/No, Disagree/Agree). This basic flowchart can be used as a repeating unit in the workflow diagram describing the working process of some editorial office.Types of Flowcharts
Picture: Types of Flowcharts
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Anyone Have an ERD Symbols Quick Reference?

ERD drawing becomes easier with predesigned entity relationship symbols, work flow shapes, entity relationship stencils. All variety of ERD symbols you may need for ERDs design is packed into libraries and templates from Entity-Relationship Diagram (ERD) Solution for ConceptDraw PRO diagramming and vector drawing software. But anyone have an ERD symbols quick reference? Detailed reference information for them is represented at the tables.Anyone Have an ERD Symbols Quick Reference?
Picture: Anyone Have an ERD Symbols Quick Reference?
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In searching of alternative to MS Visio for MAC and PC with ConceptDraw PRO

If you are an advanced diagramming software user, you might use it daily. Traversing the Internet in searching of alternative to MS Visio for MAC and PC, you can fulfill all your requirements with ConceptDraw PRO. Don’t hesitate to transfer your documents to another operating system. When looking for a smart and simple tool for business diagrams as alternative to MS Visio for Apple OS X platform, ConceptDraw PRO certainly is the best choice. Making many kinds of business charts, numerous technical drawings is what ConcepDraw PRO is the best. One can easy create any diagram and complete it perfectly and quickly. The big collection of vector object libraries, templates and samples, make it the best Microsoft Visio alternative: ConceptDraw PRO is simpler to use, less expensive, and supports project management and mind mapping methods.ConceptDraw as an alternative to MS Visio for MAC and PC - Flowchart Diagram
Picture: In searching of alternative to MS Visio for MAC and PC with ConceptDraw PRO
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