The performance of management system with Java and MySQL

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November 30

Hi all,
I want to develop one management application with Java and MySQL. However I am not sure which is a good way to design the system. The system has to deal with customers' data in the database.
Should I create objects for every customers when application starts so that I do not need to access to the database often? Or
Should I access to the database everytime the user want to deal with customer's data?
Welcome for any suggestion.
Thank you
Pat

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