Why is modeling time-dependent
Why is modeling time-dependent data important with a time stamp?
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The values of data might change. A time stamp assists to ensure that the preceding value of the data remains in the database after it has changed so that you can see ere and after values via time. Without a time stamp, you will most possibly lose some of the history.
How do I take a known dollar (totalcost) such as $240.00, back out the sales taxes from the known values using the States (VA and WV) sales tax, showing the difference so that I can print an invoice, with the fields Customer name, address, city, state Subtotal, sales tax and totalcost $240.00. All
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