Question: A given relation R = { A , B , C , D , E } is decomposed into three relations: R 1 = {

A given relation R={A, B, C, D, E} is decomposed into three relations:
R1={A, B, C}, R2={B, C, D}, and R3={A, C, E}
Based on the given set of FDs F={BE, CEA}, is the above decomposition
a lossless-join decomposition? Why? Is it a dependency-preserving
decomposition? Why?

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Programming Questions!

Q:

Let s suppose, a relation R = ( A , B , C , D , E ) with a set of functional dependencies F: ( AB - > CD , D - > C , DE - > B , AC - > DC ) is given. Relation R ( A , B , C , D , E ) is decomposed...

Q:

A given relation R = {A, B, C, D, E}, and a given set of FDs F = {AB rightarrow C, DE rightarrow C, B rightarrow D} a. Is R in BCNF? If not, do the decomposition accordingly. b. Is your decomposition...

Q:

A given relation R (A, B, C, D, E, F, G, H, I, J, K, L, M, N) has these functional dependencys: A-> B, C, D, F, J G -> H, I A, G -> M M -> N D -> E J -> K, L Which is the key for R? Describe and...

Q:

This given relation R (A, B, C, D, E). Answer the following questions with the given set of FDs: (1) identify candidate keys and (2) state the strongest normal form that R satisfies (e.g., 1NF, 2NF,...

Q:

2. For a given relation R (A, B, C, D, E), we have the following functional dependencies: A->B, B->D, C D, E>D, (BC)->E i) Please use functional dependency analysis to identify the candidate keys....

Q:

Consider the relation R- IA, B, C, D, E, Fl and the following set of FDs on R: Consider also the relations: R1 (A, B, C), R2 (A, B, C, E, F), and R3 (A, B, C, D). Q3.1 (2x3-6 points) Compute the...

Q:

Consider the following relation R ( A , B , C , D , E , F , G ) where all attributes are atomic. The following functional dependencies are identified: A , B C C E , F A E F G 1 . Give the primary Key...

Q:

Insert anomaly means the inability to create a new record due to the absence of other data (2 points) True False 2 Specialization S: S = {V1, V2, ..., vn) is a set of subclasses with the same...

Q:

CSE 4 5 0 3 / 6 5 0 3 Total 5 2 points 1 . Write the definitions of 1 NF , 2 NF , 3 NF and BCNF . ( 4 * 2 . 5 = 1 0 points ) 2 . Consider the universal relation R = { A , B , C , D , E , F , G , H ,...

Q:

For the following relation and functional dependencies, analyze the potential decompositions and show if they are lossless decompositions. Relation R = (A, B, C, D, E) where A might represent Voter...

Q:

Letterman Corp. maintains its financial records on the cash basis of accounting. Interested in securing a long-term loan from its regular bank, Letterman Corp. requests you as its independent CPA to...

Q:

Scandal-racked Wells Fargo is docking its CEO $41 million. That's not nearly enough The Wells Fargo Board of Directors is evidently hoping that well be very impressed with the punishment it has meted...

Q:

A calendar - year individual is eligible to contribute to a deductible IRA. The taxpayer obtained a six - month extension to file until October 1 5 but did not file the return until November 1 . What...

Q:

space matrix for hilton hotels