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Answer Posted / vishal the expert
The level and type of information that the lock protects is
called locking granularity. Locking granularity affects
performance. When a user cannot access a row or key, the
user can wait for another user to unlock the row or key. If
a user locks an entire page, a higher probability exists
that more users will wait for a row in the page. The
ability of more than one user to access a set of rows is
called concurrency. The goal of the database administrator
is to increase concurrency to increase total performance
without sacrificing performance for an individual user.
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