A decomposition is in 3NF if every decomposed relation is in 3NF. A decomposition is in BCNF if every decomposed relation is in BCNF. Let R(A,B,C,D,E,F,G) be a relation with the functional dependencies: c→ E, EG→ D, DG→A, and A- BF. If we decompose R into relations R1(C, D, G), R2(A, D, G), R3(A, B, F), and R4(C, E), which of the following statements is TRUE?

Q: Let R(ABCDEFG) be a relation and F={A -> C, A-> D, B->F, E->F, F->G} a. Show example of lossless…

A: According to the information given:- We have R(ABCDEFG) F={A -> C, A-> D, B->F, E->F,…

Q: Consider the following relation R with attributes A, B, C, D, and E: R(A, B, C, D, E) Given the…

A: Decomposition of a relation into higher normal forms is a critical step in database design to…

Q: p.629, icon at Example 2 # 1. Let R be the relation on {1,2, 3, 4} such that R = {(1, 1), (1, 4),…

A: Step 1: Step 2:

Q: The relation R(A, B, C, D, E) has the following functional dependencies. А, В - С В, С -> D C, D→E…

A: Attached Solution for (a) and (b) part:

Q: Let R(ABCDE)  be a relation and  F={A→B, BC→E, and ED →A}. Decompose R into BCNF using BCNF…

A: Answer:)

Q: Consider a relation R(A,B,C,D,E) with functional dependencies AB→C, A→D, and D→E. (a) What are…

A: (A ) keys for relation R) is AB   Reason : -- because key is column or set of columns using that you…

Q: SIf a decomposition of a relation R into R¡ and R2 is lossless, then which of the followings are…

A: If a decomposition of a relation “R” into “R1”, and “R2” is lossless then it produces “R” by…

Q: 1. If we project the relation R(A,B,C,D,E) with dependencies A→→BC, B→D, and C→→E onto S(A,C,E),…

A: Answer is given below-

Q: Define a relation as follows: ARA = {(a, b) , (a, c), (b, c)} Select the properties that the…

A: Answer to the above question is in step2.

Q: Decompose R into a set of 3NF relations, that is lossless join and dependency preserving.

A: Here we decompose it in 3nf and check dependency preserving.…

Q: Consider F = {BC -> D, B -> E, CE -> D, E -> CA, BF -> G} and R(A,B,C,D,E,F,G) 5. Find a 3NF…

A: The given Functional depenency are :  F = {BC -> D, B -> E, CE -> D, E -> CA, BF ->…

Q: Question 1: FDs and Keys (a) Consider a relation schema R(A, B, C, D, E), and the set of…

A: Here in this question we have given a relation R. And also given set of functional dependenciesF =…

Q: Question 3. Suppose we have a relation R = (A, B,C, D, E , F) with a set of function ependencies F =…

A: A -> DE AC -> B B -> D Closure (AC) =(A, C, B, D, E)  Since AC determines all the attribute…

Q: Let FD ={G → A, A → BC, C → FG, E → HG} be a set of functional dependencies. Calculate the…

A:

Q: A decomposition of a relation R into Rị and R2 is dependency preserving, if - (a) R can be…

A: Answer: The correct option is “(d) All of them”