Question 17 Let R be a relational schema (A, B, C). If no nontrivial functional dependencies are valid in the schema the
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Question 17 Let R be a relational schema (A, B, C). If no nontrivial functional dependencies are valid in the schema the
Question 17 Let R be a relational schema (A, B, C). If no nontrivial functional dependencies are valid in the schema then a minimal key is O a AB O b. ABC Ос. АС O d. BC
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