What is pessimistic and Optimistic concurrency?

[Asha Balasubramanyan]

Hi:

  In this forum in lot of disccusions , i heard Pessimistic/optimistic
concurrency , can anyone tell me what this means?

Thanks
Asha

===========================================================================
To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
of the message "signoff EJB-INTEREST".  For general help, send email to
[EMAIL PROTECTED] and include in the body of the message "help".