vault backup: 2026-07-23 16:25:46
Benjamin Neumann
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@@ -32,6 +32,36 @@ Linksreduktion:
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![[Pasted image 20260723161032.png]]
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Rechtsreduktion:
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![[Pasted image 20260723161044.png]]
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Abschluss:
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![[Pasted image 20260723161104.png]]
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## Zerlegung von Relationen
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Kleinere bessere Schemata ohne Informationsverlust
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![[Pasted image 20260723161534.png]]
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![[Pasted image 20260723161629.png]]
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![[Pasted image 20260723161646.png]]
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![[Pasted image 20260723161904.png]]
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## Normalform und Normalisierung
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Messbare Level der Schemaqualität
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- 1NF: Erste Normalform
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- 2NF: Zweite Normalform
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- 3NF: Dritte Normalform
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- BCNF: Boyce-Codd-Normalform
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### 1NF
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![[Pasted image 20260723162352.png]]
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### 2NF
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![[Pasted image 20260723162423.png]]
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![[Pasted image 20260723162524.png]]
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