GITTA-Logo
PDF Version of this document Search Help Glossary

Lesson Navigation IconRelationales Datenmodell

Unit Navigation IconKonzepte

Unit Navigation IconAbbildung ER-Schema

LO Navigation IconERM concepts

LO Navigation IconRule 1

LO Navigation IconRule 2

LO Navigation IconRule 3

LO Navigation IconRule 4

LO Navigation IconRule 5

LO Navigation IconRule 6

LO Navigation IconRule 7

LO Navigation IconRule 8

LO Navigation IconAnwendung der Regeln

LO Navigation IconUmwandlungsübung

Unit Navigation IconData integrity

Unit Navigation IconNormalisierung

Unit Navigation IconSummary

Unit Navigation IconRecommended Reading

Unit Navigation IconGlossary

Unit Navigation IconBibliography

Unit Navigation IconMetadata


GITTA/CartouCHe news:


Go to previous page Go to next page

Transforming an ERM to a relational database scheme

In this unit we will learn the rules and methods to represent entity relationship models in relational database schemes.
Each of the following mapping rules describes one of the components of the entity relationship model. To reduce an ERM into a relational scheme all 8 rules have to be worked out. Each rule has to be applied on every entity set (rule 1, 2, 7 and 8) or relationship set (rule 3, 4, 5 and 6). Usually the correct processing sequence is: 1, 7, 8, 2, 3, 4, 5, and then 6.

For every rule a definition and an example is given.

Top Go to previous page Go to next page