ERD diagram or entity–relationship diagram is usually the result of systematic analysis to define and describe what is important to processes in an area of a business. This diagram presents a business data schema in graphical form. It is usually drawn in a graphical form as boxes (entities) that are connected by lines (relationships) which express the associations and dependencies between entities. The first example below illustrates a bookstore ER diagram.
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.
Learn more on what and how to make an ER diagram. These hands-on examples of the diagrams are available in best quality for you to print. ER or entity–relationship diagram describes inter-related things of interest in a specific domain of knowledge. This diagram shows the relationships of entity sets stored in a database. An entity in this context is a component of data. In other words, ER diagrams illustrate the logical structure of databases. Take a look at the example of an ER diagram provided below.