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
1
Expert's answer
2018-04-06T15:33:11-0400
Must have unique values not including NULL

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