computers
posted by John on .
I need help with the follwing question:
Give an example of a column A and a column B such that B is functionally dependent on A. Give an example of a column C and a column D such that D is not functionally dependent on C.

I have an Excel worksheet in which I keep track of my expenditures by categories. I could rearrange my columns as follows:
Column A = Monthly income
Column B = What's left after subtracting (in other columns) total expenditures from total income.
Column C = Mortgage expenditure each month
Column D = Life insurance expenditure each month
Now you figure out the type of spreadsheet you can put together and what you would put in the various columns. If you need help using Excel or any other similar program, simply press the F1 key for the Help section. 
need answer