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Normalization

Normalization. Anomalies Boyce-Codd Normal Form 3 rd Normal Form. Anomalies. Goal of relational schema design is to avoid anomalies and redundancy. Update anomaly : one occurrence of a fact is changed, but not all occurrences. Deletion anomaly : valid fact is lost when a tuple is deleted.

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360 views • 28 slides

Normalization ???

Normalization ???. Anomalies Boyce-Codd Normal Form 3 rd Normal Form. Anomalies ??. Goal of relational schema design is to avoid anomalies and redundancy. Redundancy : Information may be repeated unnecessarily in several tuples.

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378 views • 25 slides

Database Management Systems Chapter 3 The Relational Data Model (III)

Database Management Systems Chapter 3 The Relational Data Model (III). Instructor: Li Ma Department of Computer Science Texas Southern University, Houston. September, 2006. Normalization. Anomalies Boyce-Codd Normal Form 3 rd Normal Form. Anomalies.

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365 views • 23 slides

Normalization

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212 views • 21 slides

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City zip - PowerPoint PPT Presentation

Normalization

Normalization ???

Database Management Systems Chapter 3 The Relational Data Model (III)

Normalization