Entity-relationship model - Wikipedia, the free encyclopedia
|
|
In software engineering, an Entity-Relationship Model (ERM) is an abstract and conceptual representation of data. Entity-relationship modeling is a database modeling method, used to produce a type o...
en.wikipedia.org/wiki/Entity-relationship_model
|
|
|
What are Entity Relationship Diagrams? ... Entity Relationship Diagram Notations ... Entity Relationship Diagrams (ERDs) illustrate the logical structure of databases.
|
www.smartdraw.com/resources/tutorials/Entity-Relationsh...
www.smartdraw.com/resources/tutorials/Entity-Relationship-Diagrams
|
|
|
|
Entity Relationship Modeling (ER modeling) is by far the most common way to express the analytical result of an early stage in the construction of a new database. In this ebook, Alf Pedersen describes the principles for ER modeling, as well as the most important terms used in modeling a new database.
|
www.devarticles.com/c/a/Development-Cycles/Entity-Relat...
www.devarticles.com/c/a/Development-Cycles/Entity-Relationship-Modeling/
|
|
|
|
|
What is a database? Find out here! ... Definition: An entity-relationship (ER) diagram is a specialized graphic that illustrates the interrelationships between entities in a database. ER diagrams often use symbols to represent three different types of information.
|
databases.about.com/cs/specificproducts/g/er.htm
|
|
The E-R (entity-relationship) data model views the real world as a set of basic objects (entities) and relationships among these objects. ... The Entity Relationship Diagram...
|
www.cs.sfu.ca/CC/354/zaiane/material/notes/Chapter2/nod...
www.cs.sfu.ca/CC/354/zaiane/material/notes/Chapter2/node1.html
|
|
lines linking attributes to entity sets and entity sets to relationship sets. ... Go back and review mapping cardinalities. They express the number of entities to which an entity can be associated via a relationship. ... Next: Other Styles of Up: The Entity-Relationship Model Previous: Primary Keys for...
|
www.cs.sfu.ca/CC/354/zaiane/material/notes/Chapter2/nod...
www.cs.sfu.ca/CC/354/zaiane/material/notes/Chapter2/node8.html
|
|
Entity Relationship Model Structured data is stored in databases Along with various other constraints this data’s structure can be designed using entity relationship modeling with the end re ... Numerous conventions exist for entity relationship diagrams. Conceptual modeling is based largely on classical notation.
|
www.exforsys.com/tutorials/data-modeling/entity-relatio...
www.exforsys.com/tutorials/data-modeling/entity-relationship-model.html
|
|
2 - Entity-Relationship modelling ... The Entity-Relationship model, or ER model, of ADAMO is based on the one originally proposed by P. Chen. Its particular flavour results from the impositions of a compromise between modelling power, convenience of data manipulation from Fortran, and speed of execution.
|
www.cern.ch/Adamo/guide/Chapter-2.html
|
|
