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Evaluating the quality of entity relationship models
Information and Software Technology, 1995Abstract Entity Relationship (E-R) models are at the core of logical database design. This paper describes the development of a model, associated metrics and methodology for assessing the quality of an E-R model. The model was developed by investigating into the causal relationships between ontological and behavioural factors influencing data quality.
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1997
In this chapter as well as in chapters 6 and 7 we cover the area of relational database design. Although database design can be regarded as falling within the scope of Systems Analysis, important design techniques have been influenced by the Relational Model.
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In this chapter as well as in chapters 6 and 7 we cover the area of relational database design. Although database design can be regarded as falling within the scope of Systems Analysis, important design techniques have been influenced by the Relational Model.
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2000
In the remaining chapters, we discuss the extended entity-relationship model, the higher-order entity-relationship model HERM. However, in order to understand why it is necessary to extend the model, we will briefly discuss the original ER model first published by Chen [Che76]. It has been extended or restricted by several authors.
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In the remaining chapters, we discuss the extended entity-relationship model, the higher-order entity-relationship model HERM. However, in order to understand why it is necessary to extend the model, we will briefly discuss the original ER model first published by Chen [Che76]. It has been extended or restricted by several authors.
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Entity-Relationship Modeling Re-revisited
2004Since its introduction, the Entity-Relationship (ER) model has been the vehicle of choice in communicating the structure of a database schema in an implementation-independent fashion. Part of its popularity has no doubt been due to the clarity and simplicity of the associated pictorial Entity-Relationship Diagrams (“ERD’s”S) and to the dependable ...
Don Goelman, Il-Yeol Song
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Temporal entity-relationship models-a survey
IEEE Transactions on Knowledge and Data Engineering, 1999The entity-relationship (ER) model, using varying notations and with some semantic variations, is enjoying a remarkable and increasing popularity in both the research community-the computer science curriculum-and in industry. In step with the increasing diffusion of relational platforms, ER modeling is growing in popularity.
Heidi Gregersen, Christian S. Jensen
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REERM: Reenhancing the entity–relationship model
Data & Knowledge Engineering, 2006The entity-relationship model (ERM) remains one of the most widely used SW Engineering techniques. Much research effort has focused on incorporating into database design in general, and ER modeling in particular the historical support requirements arising from the temporal nature of dynamic domains.
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An evaluation of extended entity-relationship model
Information and Software Technology, 1997Abstract The Entity-Relationship (ER) model allows a database designer to develop a high-level conceptual schema without having to consider low-level issues such as efficiency, the underlying database management system model, or physical data structures. The ER model has become very popular for database design and is used quite extensively.
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The entity-relationship model for multilevel security
2005A design environment for security critical database applications that should be implemented by using multilevel technology is proposed. For this purpose, the Entity-Relationship model is extended to capture security semantics. Important security semantics are defined and a language to express them in an ER model by means of security constraints is ...
Günther Pernul +2 more
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Metamodeling the enhanced entity-relationship model
J. Inf. Data Manag., 2013[EN] A metamodel provides an abstract syntax to distinguish between valid and invalid models. That is, a metamodel is as useful for a modeling language as a grammar is for a programming language. In this context, although the Enhanced Entity-Relationship (EER) Model is the de facto standard modeling language for database conceptual design, to the best ...
Fidalgo, Robson N +4 more
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A Generic Entity-Relationship Model.
1989The paper describes a general framework allowing the specification, comparison and conversion of most information and data models proposed in Information System design, be they conceptual or at the DBMS level. That framework is based on an extended N1NF relational model that includes the concept of entity domain.
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