Mindmap
Enhanced ERD
Inhalt der Mindmap
Enhanced ERD
Subtype
Supertype
Disjointness constraint
- Disjoint rule
- an supertype can be only one of the subtypes
- Overlap rule
- At any given type, an suptertype can simultaneously be two or more subtypes
- Disjoint rule
Business Rules
- Derivation
- Structural assertion
- Action assertion
Informationen
- Beschreibung
- 7 Database Design Mindmap am Enhanced ERD, erstellt von Lingyun song am 17/06/2016.
- Erstellt von
- Lingyun song
- Aufrufe
- 3
- Bewertung