I have the following question, regarding multiuser.

My program have to gather rawdata from several tables, then
to calculate some end result.
The table content is employee,date enter work hour enter work,date leave work,hour leave work,
department and job.
From this rawdata I calculate how many hours he have been working.
This is done by the user. He choose fromdate-todate and push a button "calc hour".
After calc. the user approve if the employee is to have payed overtime, and is correcting
hours if something is wrong.

How does I solve this in a multiuser env???
If another choose different date, the end result is different.

Best regards

Per Simmersholm