The correct statements are: If H were in D, then every SD language must be in D. If¬H were in D, then every SD language must be in D. If L₁ and L₂ are not in D, then their intersection cannot be in D.

Database System Concepts
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ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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Question 40
The correct statements are:
If H were in D, then every SD language must be in D.
If¬H were in D, then every SD language must be in D.
If L₁ and L₂ are not in D, then their intersection cannot be in D.
Transcribed Image Text:Question 40 The correct statements are: If H were in D, then every SD language must be in D. If¬H were in D, then every SD language must be in D. If L₁ and L₂ are not in D, then their intersection cannot be in D.
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