At last, I am able to submit the data with boolean values from sql server. I wrote the code in submit button to check for 'True/False' in Checkboxes.
If (Checkbox.1.value="True")
{
Checkbox1.setvalue("TRUE");
}
Clay Fox, thanks for all your support.
I wonder, why this boolean value in SQL doesn't support the Boolean value in InfoPath, after all both are from Microsoft!!!!!