DETERM: Deterministic Event-Tuned Entity-Relationship Modeling

2005 ◽  
pp. 230-241 ◽  
Author(s):  
Eckhard D. Falkenberg
Keyword(s):  
Entity Relationship ◽  
Entity Relationship Modeling

Extended Entity Relationship Modeling

2005 ◽  
pp. 233-239 ◽  
Author(s):  
Sikha Bagui
Keyword(s):  
Comparative Analysis ◽  
Short Paper ◽  
Database Applications ◽  
Mapping Rules ◽  
Basic Concepts ◽  
Er Model ◽  
Entity Relationship ◽  
Entity Relationship Modeling

With the rising complexity of database applications, the basic concepts of Entity-Relationship (ER) modeling (as originally developed by Chen, 1976) were no longer sufficient. So the basic ER model was extended to include generalizations and specializations (Bagui & Earp, 2003; Elmasri & Navathe, 2003) and the concept of categories (Elmasri, Weeldreyer & Hevner, 1985). An ER model which includes all the concepts of the original ER model and the additional concepts of generalizations/specializations and categories is often referred to as the Extended ER (EER) model (Elmasri & Navathe, 2003). In this short paper, we shed some light on these relationship concepts, concepts that database designers often find difficult to model directly (Engels et al., 1992/1993). We also discuss the mapping rules for generalizations/specializations and categories. Important contributions in this area are also reported in (Elmasri et al., 1985; Markowitz & Shoshani, 1992; Dey, Storey & Barron, 1999; Wiederhold & Elmasri, 1980). Song, Evans, and Park (1995) also give a good comparative analysis of other types of ER diagrams and their notations.

scholarly journals Entity Relationship Modeling Approach Based on Micro- Blog Tag

2015 ◽  
Vol 10 (7) ◽  
pp. 157-170
Author(s):  
Junjiang Li ◽  
Chunlin Li ◽  
Youlong Luo ◽  
Yahui Zhao ◽  
Xijun Mao
Keyword(s):  
Modeling Approach ◽  
Entity Relationship ◽  
Entity Relationship Modeling
Sign in / Sign up

Export Citation Format

Share Document