Multiple choice

Which of the following schemes in distributed database management consists of locks that has one copy of each data item privilged and lock all the copies so that conflicts are discovered at the site where the primary copy resides?

  1. Primary copy locking

  2. Read - Write locks

  3. Majority locking

  4. None of these
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A Correct answer
Explanation

Primary copy locking is one that has one copy of each data item privilged and lock all the copies so that conflicts are discovered at the site where the primary copy resides.

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