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A relation is in third normal form (3NF) if it is in 2NF and:
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Subject
Computer Science
Topic
Databases
Subtopic
Normalization
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hard
Has no partial dependencies
Has no transitive dependency of non-key attributes
Uses only surrogate keys
Has no foreign keys
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Explanation
3NF eliminates transitive dependencies: non-key attributes must not depend on other non-key attributes.…
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Concept Behind This Question
This question focuses on the concept of Normalization under the broader topic of Databases.
Related key concepts: databases, normalization.
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Databases
· Functional Dependencies· Recovery· Relational Model· SQL→ Normalization· Indexing· Primary vs Foreign Key Links· Transactions· ER Model· Triggers· Views· Stored Procedures· Concurrency Control· Integrity Constraints· Data Models· Data Warehousing· Database Systems· Distributed Databases· Relational Algebra· NoSQL· ACID Transactions· Relational Integrity· Concurrency Deadlock Anomalies
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Related Questions
- hardDatabases
A relation is in second normal form (2NF) if it is in 1NF and:
- hardDatabases
Boyce-Codd Normal Form (BCNF) requires that for every functional dependency X to Y, X must be a:
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A partial dependency exists when a non-key attribute depends on:
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A transitive dependency exists when a non-key attribute depends on:
- mediumDatabases
The process of organizing relations to reduce data redundancy and improve integrity is called:
- mediumDatabases
A relation is in first normal form (1NF) if:
Question Details
- Subject:
- Computer Science
- Topic:
- Databases
- Subtopic:
- Normalization
- Difficulty:
- hard
- Source:
- Silberschatz Database System Concepts 7th Ed Ch.7
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