Question
Explain the following concepts with respect to the relational data model, giving one data-science-oriented example for each:
Candidate Key
Functional Dependency
Referential Integrity
Selection Operation
Projection Oeration
Answer :
Word Count : 275
In the relational data model, a Candidate Key is a minimal set of attributes that uniquely identifies each tuple in a relation. A relation may have multiple candidate keys, but each must ensure uniqueness and contain no redundant attribute. For example, in a data science ___ ____ _________ ___ ____ _________.
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In the relational data model, a Candidate Key is a minimal set of attributes that uniquely identifies each tuple in a relation. A relation may have multiple candidate keys, but each must ensure uniqueness and contain no redundant attribute. For example, in a data science ___ ____ _________ ___ ____ _________.
_______ _____ _____ ___ ________ ______ __________ ______ _____ ______.
_________ ______ ____ _________ ______ _______ _________ _______.
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