However, there are different ERD models that use ... to represent the same concepts. In this article, you will learn how to compare and contrast three common ERD models: Chen, Barker, and UML.

For example, one customer can have many ... represent the cardinality. To verify the cardinality for your ERD, you need to test it against some scenarios and examples of your data. You can use ...

Part 1, set the stage, describing the basic differences between UML and the various entity/relationship modeling notations ... but these can be represented in a data model without using sub-types.

we use the object management group (OMG) meta object facility-(MOF) to formally describe the higher-order entity relationship model (HERM). In addition, we formally define a UML profile for HERM. By ...

which is expressed in Z notation and then represented visually using an Entity-Relationship diagram. Implementation of our approach would bridge the gap between a formal language, which is ...

It will take familiar concepts and show you how to represent them using the UML notation. The notation is not ... Note that, while in preliminary entity/relationship models, many-to-many relationships ...