Loan-info-schema = (bname, loan#, cname, amount)
if a loan may be made jointly to several people (e.g. husband and wife) then we would not expect loan# to be a superkey. That is, there is no such dependency
We do however expect the functional dependency
to hold, as a loan number can only be associated with one amount and one branch.
Figure 6.2: Sample relation r.
There are no functional dependencies for Borrower-schema, nor for Depositor-schema.