1.

What Is Concurrency?

Answer»

Concurrency is allowing simultaneous ACCESS of same data by DIFFERENT users. Locks useful for accesing the DATABASE are

  • EXCLUSIVE: The exclusive lock is useful for locking the row when an insert,UPDATE or delete is being done.This lock should not be applied when we do only select from the row.
  • Share lock: We can do the table as Share_Lock as many share_locks can be put on the same resource.

Concurrency is allowing simultaneous access of same data by different users. Locks useful for accesing the database are


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