E R Diagramm. Er diagrams are most often used to design or debug relational databases in the fields of software engineering business information systems education and research. First er diagrams are easy to understand and do not require a person to undergo extensive training to be able to work with it efficiently and accurately.
Sports Club Er Diagram Relationship Diagram Diagram Wedding Illustration from www.pinterest.com
This notation was developed and implemented by peter chen in 1976. Er diagram er diagram or entity relationship diagram is a conceptual model that gives the graphical representation of the logical structure of the database. At first look an er diagram looks very similar to the flowchart.
You can use so popular chen s notation to represent all components of database and their relationships on the er diagram.
At first look an er diagram looks very similar to the flowchart. Er diagrams are used to sketch out the design of a database. It shows all the constraints and relationships that exist among the different components. Er diagrams are created based on three basic concepts.
