Semantic Concept Set of the ER Model and Its Representation
Liu Fei-fe · Sci-Tech Information Development & Economy · 2006
The ER model can be used to express the entity, connection and restraint of the actual world, sums up the semantic concept set supported by ER model mainly from the data structure, data operation and data restraint condition, introduces several kinds of the representations that are used more widely, and makes the comparison of the concept set and graphic representation supported by these representations and the tools supported by CASE.