ER notation

Beschreibung

1 Database Karteikarten am ER notation, erstellt von linneamd am 14/03/2016.
linneamd
Karteikarten von linneamd, aktualisiert more than 1 year ago
linneamd
Erstellt von linneamd vor mehr als 8 Jahre
19
1

Zusammenfassung der Ressource

Frage Antworten
Cardinality ratio: 1:N for E1:E2 in R
Total participation of E2 in R
Derived Attribute
Composite Attribute
Multivalued Attribute
Key attribute
Attribute
Identifying relationship
Relationship
Weak entity
Entity
What is the meaning of total participation? Every entity in the set is involved in some association (or tuple) of the relationship.
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