A collection of ER diagram examples are available in the following 101 Diagramss. Follow these examples of the diagrams to study more on how to make your own diagrams!  An entity relationship diagram looks very much like a flowchart. The first one posted below is the example of standard database ER diagrams.

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This diagram shows the relationships of entity sets stored in a database. ER diagrams also are often used in conjunction with data flow diagrams (DFDs), which map out the flow of information for processes or systems. An ER diagram is a means of visualizing how the information a system produces is related.

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There are five main components of an ERD: (1) Entities, which are represented by rectangles. An entity is an object or concept about which you want to store information. (2) Actions, which are represented by diamond shapes, show how two entities share information in the database. (3) Attributes, which are represented by ovals. A key attribute is the unique, distinguishing characteristic of the entity. (4) Connecting lines, solid lines that connect attributes to show the relationships of entities in the diagram. (5) Cardinality specifies how many instances of an entity relate to one instance of another entity.

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All these pictures presented are printable ER diagrams resources. Learn more about the other educational diagrams by browsing through our categories or looking it up on the search column!