Logical database design with Unified Modeling Language
This chapter describes the entity-relationship model of database design. Another model that you can use is Unified Modeling Language (UML). The Object Management Group is a consortium that created the UML standard. This section provides a brief overview of UML. 
UML modeling is based on object-oriented programming principals. The basic difference between the entity-relationship model and the UML model is that, instead of designing entities as this chapter illustrates, you model objects. UML defines a standard set of modeling diagrams for all stages of developing a software system. Conceptually, ...
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