Multiple choice

How many types of keys are there in relational database?

  1. 9

  2. 7

  3. 8

  4. 6

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

There are seven types of keys in relational database. These are: 1.) Primary key 2.) Candidate key 3.) Super key 4.) Foreign key 5.) Alternate key 6.) Artificial key 7.) Composite key So, this is the correct answer.

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