AC→D, AB→C, AB→D, AB→E

What is the highest normal form for the following relation and its functional dependencies? Assume it is in INF. A(x, w. z) • X- w 1NF BCNF 2NF 3NF cannot be determined

3. Consider a relation R from X={1,2,3,4} to Y={a,b,c,d). R= {(1,b), (2,c), (2,d), (3,c), (4,a) } Please draw the relational matrix of R.

The distinction between a weak and a strong entity collection has to be clarified.

Solve the following:

Given the reation R (A, B, C, D , E), with functional dependencies: A, B -> C D, E -> C B -> D Could you explain why this is not functional dependency preserving? Also could you work out the BCNF for this?

Select all binary relation properties that apply to the following relation: Equal magnitude: |x| = lyl O antisymmetric O reflexive O symmetric O transitive

question one: defined the following relation on A={0,2,5,6} Answer each of the following questions by listing the index of the relation. For example, for Part 1), if R1 and R2 and are reflexive, simply enter 1, 2 as the answer.1) Which relations are reflexive? 2) R0={(0,6),(6,6),(6,2),(0,0),(0,2),(2,2),(5,5)} 3) R1={(6,6),(2,2),(5,5),(0,0),(0,6)} 4) R2={(0,6),(6,6),(0,0),(5,6),(6,5),(5,0),(5,5),(2,2),(0,5) 5) R3={(5,5),(0,0),(6,6),(2,2) 6) R4={(5,5),(6,2),(6,6),(0,0),(6,5),(2,6),(2,2)} 1) Which relations are reflexive? 2) Which relations are symmetric? 3) Which relations are anti-symmetric? 4) Which relations are transitive? 5) Which relations are equivalence relations? 6) Which relations are partial orders? question two :defined the following relation on A={0,1,5,6} Answer each of the following questions by listing the index of the relation. For example, for Part 1), if R1 and R2 and are reflexive, simply enter 1, 2 as the answer.   R0={(5,5),(0,0),(6,6),(1,1)}…

Give all the keys of R if the functional dependencies on R in each of the following cases

3,