1.

What do you mean by super key, primary key, foreign key and candidate key?

Answer»
  • Super Key:- This key RECOGNIZES the row in the table.
  • Primary Key:-This key is a column in the table which recognizes each row in the same table uniquely
  • Candidate Key:-This key does not have any repeated attribute
  • Foreign Key:-This key a column in the table to CREATE a relationship with another table.

This particular RDBMS Question explains the IMPORTANCE of KEYS in the DATABASE.


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