Which three pieces of information did E.F. Codd describe as necessary to retrieve a data value from a relational database?


Which three pieces of information did E.F. Codd describe as necessary to retrieve a data value from a relational database?

A.
Attribute, domain, andtuple

B.
Entity, relation name, and domain

C.
Table name, primary key, and entity

D.
Attribute, relation name, and primary key



Discussion

3 Responses to “Which three pieces of information did E.F. Codd describe as necessary to retrieve a data value from a relational database?”

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  2. Karen says:

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  3. seenagape says:

    I choose D

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