Give a lossless decomposition into BCNF of schema R of Exercise 7.1. Exercise 7.1. Suppose that we

Question:

Give a lossless decomposition into BCNF of schema R of Exercise 7.1.

Exercise 7.1.

Suppose that we decompose the schema R = (A, B, C, D, E) into

(A, B, C)
(A, D, E).

Show that this decomposition is a lossless decomposition if the following set F of functional dependencies holds:

A → BC
CD → E
B → D
E → A

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Database System Concepts

ISBN: 9780078022159

7th Edition

Authors: Abraham Silberschatz, Henry F. Korth, S. Sudarshan

See More Books

Question Posted: Jun 13, 2022 07:42 AM

See More Questions

Give a loss less-join decomposition into BCNF of schema R of Exercise 7.2.
Suppose that we decompose the schema R = (A, B, C, D, E) into (A, B, C) (A, D, E). Show that this decomposition is a loss less-join decomposition if the following set F of functional dependencies...
Suppose that a differentiable functional f on an open set S n is quasiconcave. At every regular point f(x0) 0, A restricted form of quasiconcavity is useful in optimization (see section 5.4.3). A...
In Exercises find the given higher-order derivative. 2 "(x) = 2 / f(x) X
Here is the population of all five U.S. presidents who had professions in the military, along with their ages at inauguration: Eisenhower, 62; Grant, 46; Harrison, 68; Taylor, 64; and Washington, 57....
Jesse Spires was employed as a welder by Johnson Welded Products, Inc. Johnson Welded Products provides a lunchroom equipped with a microwave, refrigerator, and vending machine for sandwiches,...
What does integrity mean in the context of data management?
Minelli Enterprises uses large amounts of copper in the manufacture of ceiling fans. The firm has been very concerned about the detrimental impact of rising copper prices on its earnings and has...
When discussing the evaluation of model performance, we introduced the method of dividing data into training vs. test set. In the illustration of the Caret package, we further demonstrate that the...
Consider an entity type SECTION in a UNIVERSITY database, which describes the section offerings of courses. The attributes of SECTION are SectionNumber, Semester, Year, CourseNumber, Instructor,...
Although the BCNF algorithm ensures that the resulting decomposition is lossless, it is possible to have a schema and a decomposition that was not generated by the algorithm, that is in BCNF, and is...
Consider the schema R = (A, B, C, D, E, G) and the set F of functional dependencies: R is not in BCNF for many reasons, one of which arises from the functional dependency AB CD. Explain why AB CD...
State the equation for the return on assets and explain how it is interpreted.
Examine any five factors that your small coffee shop should consider when selecting mode of shipment, carrier and routing. Use relevant examples.
Describing the closure of a factory in a small town as "reallocation of resources" is an example of 5 pts
Given the below Turing machine. Generate the computation of the string 0011, what is the language recognized by the Turing machine. B B.R 90 93 0 A.R A A, R BB,R U U.R 91 0 0, R BB,R 1 B.L 92 BB,L...
Given the below non deterministic Turing Machine: 1- Show the computation tree of the string #aab 2- Show the values on the three tapes of the multi-tape deterministic Turing machine equivalent to...
Consider the following Boolean circuit, with the assignment x1, X3, X5 =TRUE, X2, X4 = FALSE. Evaluate the Boolean circuit. Show your work by indicating the truth value produced by each gate. X2 X3...
The two cities Minneapolis, Minnesota, and Lake Charles, Louisiana, lie on the 93° W longitudinal line. The latitude of Minneapolis is 45° N (45° north of the equator) whereas the...
l ask this second time correnct answer is 38,01 can we look pls Consider a non-conducting rod of length 8.8 m having a uniform charge density 4.5 nC/m. Find the electric potential at P, a...
Of the n! possible inputs to a given comparison-based sorting algorithm, what is the absolute maximum number of inputs that could be correctly sorted with just n comparisons?
Following our analysis of randomized quick-sort in Section 12.2.1, show that the probability that a given input element x belongs to more than 2logn subproblems in size group i is at most 1/n 2 .
If the conditional at line 14 of our quickSortInPlace implementation of Code Fragment 12.6 were changed to use condition left < right, instead of condition left /** Sort the subarray S[a.b]...
3. (a) Find the binary representation of /3. (b) By noting that -9.6= (-1) 23 1.2. x Use the result in (a), represent -9.6 in IEEE single precision format through rounding. (c) Represent the result...
1. Convert the following iteration Even method to recursive method: (Ex: EVEN(0,10) Void enas iteration even(int Lint n) { } int i=1: while(i
(30 Pts.) Convert the following for loop into a while loop n=[] For Loop for x in range(100,0,-1): if x%10==0: n.append(x) print(n) While Loop (Write your answer below)

Give a lossless decomposition into BCNF of schema R of Exercise 7.1. Exercise 7.1. Suppose that we

Question:

Step by Step Answer:

Solution RABCD We decompose it into R1ABC R2ADE The set of ...View the full answer

Database System Concepts

Students also viewed these Computer science questions