Forms Data Controls :: Calculate And Plot The Value From Database?

Feb 18, 2011

i have created a program which saves login and logout time for a project.there may be more 2 login for a same project.i need to store the total working time for a particular project from all login/logout time.then for the same date there may be more than one entry.Ex:

Project name: Test
User name:
Login time:
Logout time:
Total Time: logout-login
Date:date of login

this is a format of table in database..more than one user will work for the project.there may more than one entry for a day by different users for same project.i need to put a chart for this table with date in x axis and total working time for that date in y-axis.How to calculate the values for this constraints

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