Question: Please answer 6 and 7, will rate thank you For this homework assignment, consider the schema R-(A,B.C.D.E)and the following set F of functional dependencies holds

Please answer 6 and 7, will rate thank you

For this homework assignment, consider the schema R-(A,B.C.D.E)and the following set F of functional dependencies holds on R: CD-E Problem 1. Suppose that we decompose the schema R into R-(A,B.C) and R (A.D.E). Show that this decomposition is a lossless-join decomposition with respect toF. Problem 2. Suppose that we decompose the relation schema R into R (A,B.c) and R (C.D,E). Show that this decomposition is not a lossless-join decomposition. Hint: Give an example of a relation ron schema R such that C,D,E Problem 3, Compute (BC)'. Problem 4. Compute the canonical cover Problem 5. Show that the decomposition of R into R .(4,8,c) and R.-(A,D,E) s not a dependency-preserving decomposition Problem 6. Give a lossless-join decomposition into BCNF of R. Problem 7. Give a lossless-join, dependency preserving decomposition into 3NF of R

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 Databases Questions!

The Schutzberg Brewery has received an order for 1,500 gallons of 3-percent beer (that is, 3 percent alcoholic content). This is a custom order because Schutzberg does not produce a 3-percent...

For this homework assignment, consider the schema R (A,B,C,D,E) and the following set F of functional dependencies holds on R: E A B D CD E A BC Problem 1. Suppose that we decompose the schema R into...

Please answer questions 5-7, will rate. Thank you. For this homework assignment, consider the schema R-(a..cD. and the following set Fof functional dependencies holds on R: A-, BC CDE Problem 1....

For this homework assignment, consider the schema R-(A,B.C,D, E) and the following set F of functional dependencies holds on R Problem 1. Suppose that we decompose the schema R into R (A,B,C) and R...

For this homework assignment, consider the schema R=(A,B,C,D,E) and the following set F of functional dependencies holds on R: A BC CD E BD EA Problem 1. Suppose that we decompose the schema R into...

For this homework assignment, consider the schema R=(A,B,C,D,E) and the following set F of functional dependencies holds on R: A BC CD E BD EA Problem 4. Compute the canonical cover Fe. Problem 5....

Answer both questions and ill rate! For this homework assignment, consider the schema R=(A,B,C,D,E) and the following set F of functional dependencies holds on R CD-E B-D

2. Using the database schema {R_1,R_2,...,R_n} and the corresponding sets F_1,F_2,...,F_n of FDs obtained from question (1.ii): (i) Using the definition of 3NF, explain whether each R_i is in 3NF or...

Developments in Technology Light is incident from air on the end face of a multimode optical fibre at angle of incidence as shown below. n n 1 2 The refractive indices of the core and cladding are...

A. A neural network typically starts out with random coefficients (weights); hence, it produce essentially random predications when presented with its first case. What is the key ingredients by which...

If x N(2, 5), what is E(ex)? What is the median of ex? Calculate.

Develop a draft estimate of work. The estimate of work should be comprehensive for your project and describe the work and level of effort required to complete all activities. Remember, the estimate...

What is the primary advantage of maintaining a library of financial model schedules? It improves efficiency by reusing standardized components. It reduces the need for model documentation. It...

Seved Help 14 Wisconsin Snowmobile Corp. is considering a switch to level production Cost efficiencies would occur under level production, and aftertax costs would decline by $31,500, but inventory...

How do modern Dashboards differ from earlier implementations?

Provide an example of a descending Hierarchy of Data Validation/Lookup Tables.

In a HCM Database, how does applying Relational Design and Third Normal Form rules avoid duplication of Job Title storage in each employee base record?