Explain optimistic and pessimistic concurrency?
Submitted by: AdministratorOptimistic concurrency: - Assumes that a resource is likely to be available at all times. This means that resource locking is very unlikely. If a conflict occurs, the application must read the data and attempt the change again.
Pessimistic concurrency : - this locks the resources as and when required. A transaction can be assured to be completed unless a deadlock occurs
Submitted by: Administrator
Pessimistic concurrency : - this locks the resources as and when required. A transaction can be assured to be completed unless a deadlock occurs
Submitted by: Administrator
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