2 Comments on “Which key uniquely identifies a row in a table?”

1. malsa001 says:

   October 11, 2016 at 12:55 am

   B.

   
   
   
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2. Davitt Maher says:

   September 25, 2017 at 7:36 am

   The primary key constraint uniquely identifies each record in a database table. The primary key must contain unique values and it cannot contain NULL values.
   Each table should have a primary key, and each table can have only one value.

   
   
   
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