# Entity Relationship Diagram Symbols

Creating an entity-relationship (ER) model is to visually represent the structure of a business database, where data equates to entities (or objects) that are linked by defined relationships expressing dependencies and requirements. By nature it is an abstract visualization, the first step in the design process towards creating a logical and functional database.ERD symbols used for professional ERD drawing are collected in libraries from the Entity-Relationship Diagram (ERD) solution for ConceptDraw DIAGRAM.

## Basic Flowchart Symbols and Meaning

Flowchart Symbols and Meaning - Provides a visual representation of basic flowchart symbols and their proposed use in professional workflow diagram, standard process flow diagram and communicating the structure of a well-developed web site, as well as their correlation in developing on-line instructional projects. See flowchart's symbols by specifics of process flow diagram symbols and workflow diagram symbols.## ERD Symbols and Meanings

Crow's foot notation is used in Barker's Notation, Structured Systems Analysis and Design Method (SSADM) and information engineering. Crow's foot diagrams represent entities as boxes, and relationships as lines between the boxes. Different shapes at the ends of these lines represent the cardinality of the relationship.The Chen's ERD notation is still used and is considered to present a more detailed way of representing entities and relationships.

To create an ERD, software engineers mainly turn to dedicated drawing software, which contain the full notation resources for their specific database design - ERD symbols and meanings. CS Odessa has released an all-inclusive Entity-Relationship Diagram (ERD) solution for their powerful drawing program, ConceptDraw DIAGRAM.

## UML Diagram Types List

Two types of diagrams are used in UML: Structure Diagrams and Behavior Diagrams. Behavior Diagrams represent the processes proceeding in a modeled environment. Structure Diagrams represent the elements that compose the system.This engineering drawing shows different types of geometry of butt welds.

"Welds can be geometrically prepared in many different ways. The five basic types of weld joints are the butt joint, lap joint, corner joint, edge joint, and T-joint (a variant of this last is the cruciform joint). Other variations exist as well - for example, double-V preparation joints are characterized by the two pieces of material each tapering to a single center point at one-half their height. Single-U and double-U preparation joints are also fairly common - instead of having straight edges like the single-V and double-V preparation joints, they are curved, forming the shape of a U. Lap joints are also commonly more than two pieces thick - depending on the process used and the thickness of the material, many pieces can be welded together in a lap joint geometry." [Welding. Wikipedia]

This engineering drawing example was redesigned using the ConceptDraw PRO diagramming and vector drawing software from the Wikimedia Commons file: Butt Weld Geometry.GIF.

[commons.wikimedia.org/ wiki/ File:Butt_ Weld_ Geometry.GIF]

The engineering drawing example "Butt weld geometry" is included in the Mechanical Engineering solution from the Engineering area of ConceptDraw Solution Park.

"Welds can be geometrically prepared in many different ways. The five basic types of weld joints are the butt joint, lap joint, corner joint, edge joint, and T-joint (a variant of this last is the cruciform joint). Other variations exist as well - for example, double-V preparation joints are characterized by the two pieces of material each tapering to a single center point at one-half their height. Single-U and double-U preparation joints are also fairly common - instead of having straight edges like the single-V and double-V preparation joints, they are curved, forming the shape of a U. Lap joints are also commonly more than two pieces thick - depending on the process used and the thickness of the material, many pieces can be welded together in a lap joint geometry." [Welding. Wikipedia]

This engineering drawing example was redesigned using the ConceptDraw PRO diagramming and vector drawing software from the Wikimedia Commons file: Butt Weld Geometry.GIF.

[commons.wikimedia.org/ wiki/ File:Butt_ Weld_ Geometry.GIF]

The engineering drawing example "Butt weld geometry" is included in the Mechanical Engineering solution from the Engineering area of ConceptDraw Solution Park.

## Block Diagram

The vector stencils libraries: Block Diagrams, Blocks with Perspective, Callouts, Connectors, Raised Blocks from the solution Block Diagrams contain specific block diagram symbols such as arrows, input/output symbols, start/end symbols, processing symbols, conditional symbols, commenting symbols, callouts, connectors, etc. for ConceptDraw DIAGRAM diagramming and vector drawing software. The Block Diagrams solution is contained in a "Diagrams" area of ConceptDraw Solution Park.Use the libraries from the Block Diagrams solution to draw block diagrams for your business documents, presentations and websites in a few minutes.

## Bubble diagrams in Landscape Design with ConceptDraw DIAGRAM

To define the links between the different areas of your own landscape design and see the project from aside, we recommend to draw landscape diagram called bubble one which is analogue of «mind maps» as it allows us to create approximate image of our future proper landscape view. Use special libraries (and we have plenty of them) with objects of landscape design to be able to create the detailed plan of your landscape which will be looking so smart and professionally good as the samples we provide were created by designers who know so much about making such kinds of design plans. Having ConceptDraw DIAGRAM as the assistant in your work, will ensure the success after using our product. Make the bubble diagrams as well as any other ones in minutes with ease having our application called ConceptDraw DIAGRAM and you will see how quick it will change your life simplifying lots of work."In geometry a polygon is traditionally a plane figure that is bounded by a finite chain of straight line segments closing in a loop to form a closed chain or circuit. These segments are called its edges or sides, and the points where two edges meet are the polygon's vertices (singular: vertex) or corners. The interior of the polygon is sometimes called its body. An n-gon is a polygon with n sides. A polygon is a 2-dimensional example of the more general polytope in any number of dimensions. ...

The basic geometrical notion has been adapted in various ways to suit particular purposes. Mathematicians are often concerned only with the bounding closed polygonal chain and with simple polygons which do not self-intersect, and they often define a polygon accordingly. A polygonal boundary may be allowed to intersect itself, creating star polygons. Geometrically two edges meeting at a corner are required to form an angle that is not straight (180°); otherwise, the line segments may be considered parts of a single edge; however mathematically, such corners may sometimes be allowed. These and other generalizations of polygons are described below." [Polygon. Wikipedia]

The geometry diagram example "Polygon types" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Mathematics solution from the Science and Education area of ConceptDraw Solution Park.

The basic geometrical notion has been adapted in various ways to suit particular purposes. Mathematicians are often concerned only with the bounding closed polygonal chain and with simple polygons which do not self-intersect, and they often define a polygon accordingly. A polygonal boundary may be allowed to intersect itself, creating star polygons. Geometrically two edges meeting at a corner are required to form an angle that is not straight (180°); otherwise, the line segments may be considered parts of a single edge; however mathematically, such corners may sometimes be allowed. These and other generalizations of polygons are described below." [Polygon. Wikipedia]

The geometry diagram example "Polygon types" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Mathematics solution from the Science and Education area of ConceptDraw Solution Park.

## Pyramid Diagram and Pyramid Chart

Pyramid Diagram is very useful to illustrate the foundation-based relationships. ConceptDraw DIAGRAM, a business charting software, includes some build-in symbols for designer to draw all kind of the pyramid diagrams.## Functional Block Diagram

You need design the Functional Block Diagram and dream to find the useful tools to draw it easier, quickly and effectively? ConceptDraw DIAGRAM offers the Block Diagrams Solution from the "Diagrams" Area which will help you!- Polygon types | Common joint types | Bubble diagrams in ...
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- ERD | Entity Relationship Diagrams, ERD Software for Mac and Win
- Flowchart | Basic Flowchart Symbols and Meaning
- Flowchart | Flowchart Design - Symbols, Shapes, Stencils and Icons
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- Electrical | Electrical Drawing - Wiring and Circuits Schematics
- Flowchart | Common Flowchart Symbols
- Flowchart | Common Flowchart Symbols