Answer to Question #75640 in Databases | SQL | Oracle | MS Access for Jonny
Question #75640
For a single column to be a primary key, what specific condition is required by the Relational Model?
Must include NULL
Must have unique values
Must have unique values not including NULL
Must be multivalued
Must include NULL
Must have unique values
Must have unique values not including NULL
Must be multivalued
Expert's answer
Must have unique values not including NULL
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#183372 on Dec 2017
#183372 on Dec 2017 
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