... more of an art than a science. It's true that there are some scientific principles that can be brought to bear on the problem, and those principles are the subject of Chapters 1 1- 1 3; unfortunately, ... Introduction to Part III *** Copyright (c) 2003 C. J. Date page 11 .4 is constrained to contain at most one tuple (for further discussion, see the answer to Exercise 9 .10 ). ────────── ... answer provided. Candidate keys: L, DPC, and DPT. 11 .14 Abbreviating NAME, STREET, CITY, STATE, and ZIP* to N, R, C, T, and Z, respectively, we have: N → RCT RCT → Z Z → CT An obviously...