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A functional dependency X to Y means that:
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Subject
Computer Science
Topic
Databases
Subtopic
Functional Dependencies
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hard
X and Y are independent
Y uniquely determines X
Each value of X is associated with exactly one value of Y
Y is always null
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Explanation
A functional dependency X to Y states that each X value determines exactly one Y value.…
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Concept Behind This Question
This question focuses on the concept of Functional Dependencies under the broader topic of Databases.
Related key concepts: databases, functional-dependencies.
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Question Details
- Subject:
- Computer Science
- Topic:
- Databases
- Subtopic:
- Functional Dependencies
- Difficulty:
- hard
- Source:
- Silberschatz Database System Concepts 7th Ed Ch.7
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