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2. Dia (software) - Wikipedia

   en.wikipedia.org/wiki/Dia_(software)

   Dia has special objects to help draw entity-relationship models, Unified Modeling Language (UML) diagrams, flowcharts, network diagrams, and simple electrical circuits. It is also possible to add support for new shapes by writing simple XML files, using a subset of Scalable Vector Graphics (SVG) to draw the shape.

3. Entity–relationship model - Wikipedia

   en.wikipedia.org/wiki/Entity–relationship_model

   Entity–relationship model. An entity–attribute-relationship diagram for an MMORPG using Chen's notation. An entity–relationship model (or ER model) describes interrelated things of interest in a specific domain of knowledge. A basic ER model is composed of entity types (which classify the things of interest) and specifies relationships ...

4. Resources, Events, Agents - Wikipedia

   en.wikipedia.org/wiki/Resources,_Events,_Agents

   Resources, events, agents ( REA) is a model of how an accounting system can be re-engineered for the computer age. REA was originally proposed in 1982 by William E. McCarthy as a generalized accounting model [1], and contained the concepts of resources, events and agents (McCarthy 1982). REA is a standard approach in teaching accounting ...

5. Barker's notation - Wikipedia

   en.wikipedia.org/wiki/Barker's_notation

   Barker's notation refers to the ERD notation developed by Richard Barker, Ian Palmer, Harry Ellis et al. whilst working at the British consulting firm CACI around 1981. The notation was adopted by Barker when he joined Oracle and is effectively defined in his book Entity Relationship Modelling as part of the CASE Method series of books.

6. yEd - Wikipedia

   en.wikipedia.org/wiki/YEd

   yEd can be used to draw many different types of diagrams, [4] including flowcharts, network diagrams, UMLs, BPMN, mind maps, organization charts, and entity-relationship diagrams. yEd also allows the use of custom vector and raster graphics as diagram elements. yEd loads and saves diagrams from/to GraphML, an XML-based format. It can also print ...

7. Euler diagram - Wikipedia

   en.wikipedia.org/wiki/Euler_diagram

   Euler diagram. An Euler diagram ( / ˈɔɪlər /, OY-lər) is a diagrammatic means of representing sets and their relationships. They are particularly useful for explaining complex hierarchies and overlapping definitions. They are similar to another set diagramming technique, Venn diagrams.

8. Enhanced entity–relationship model - Wikipedia

   en.wikipedia.org/wiki/Enhanced_entity...

   The enhanced entity–relationship ( EER) model (or extended entity–relationship model) in computer science is a high-level or conceptual data model incorporating extensions to the original entity–relationship (ER) model, used in the design of databases . It was developed to reflect more precisely the properties and constraints that are ...

9. ER diagram - Wikipedia

   en.wikipedia.org/?title=ER_diagram&redirect=no

   This page was last edited on 23 May 2012, at 03:06 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike License 4.0; additional terms may apply ...