Give an example of a relation schema R and a set of dependencies such that R is

Question:

Give an example of a relation schema R and a set of dependencies such that R is in BCNF, but is not in 4NF.

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: 978-0072554816

4th Edition

Authors: Henry F. Korth, S. Sudarshan

See More Books

Question Posted: Jan 28, 2011 05:54 AM

See More Questions

Give an example of a relation schema R` and set F` of functional dependencies such that there are at least three distinct lossless-join decompositions of R` into BCNF.
Give an example of a situation for which invoking the controllability principle would have a desirable motivational effect. Also give an example of a situation for which suspending the...
Give an example of a recent political development that changed the overall strategy of an organization.
During the year ended 30 June 20X5, Gem Stone Ltd acquired two areas of interest Site A and Site B. The exploration and evaluation activities at Site A amounted to $64454401. The costs relate to the...
Montrose Oil and Lube is a car care center specializing in ten-minute oil changes. Montrose Oil and Lube has two service bays, which limits its capacity to 4,000 oil changes per month. The following...
Suppose that the Cobb-Douglas production function is q = L0.75K0.25. a. What is the average product of labor, holding capital fixed? b. What is the marginal product of labor? c. What are the APL and...
Traditional forms of coordination can be roughly stereotyped as Japanese centralisation, American formalisation or European socialisation. LO1
You have the following information related to Chalmers Corporations pension plan: 1. Defined benefit, noncontributory pension plan. 2. Plan initiation, January 1, 2014 (no credit given for prior...
Tweedle Jackets make and sell Tweed Jackets, which never go out of style. Tweedle Jackets uses a process costing with steps approach to understand the costs of their jackets. The process has two...
An electron lies at rest in the magnetic field of an infinite straight wire carrying a current I. At t = 0, the wire is suddenly charged to a positive potential without affecting I. The electron...
Given the three goals of relational-database design, is there any reason to design a database schema that is in 2NF, but is in no higher-order normal form?
Explain why 4NF is a normal form more desirable than BCNF.
Name an element in Group 1A or Group 2A that is an important constituent of each of the following substances: (a) Remedy for acid indigestion. (b) Coolant in nuclear reactors. (c) Epsom salt. (d)...
5. What is the executive summary?
Create a data model for one of the processes in the end-of-chapter Exercises for Chapter 4. Explain how you would balance the data model and process model.
The first diagram depicts a compound in its liquid state. Which of the other diagrams best depicts the compound after it has evaporated into a gas? (a) (b)
In SQL, foreign key constraints can reference only the primary key attributes of the referenced relation or other attributes declared to be a superkey using the unique constraint. As a result, total...
Consider the following lattice structure of generalization and specialization A X B Y C
An E-R diagram usually models the state of an enterprise at a point in time. Suppose we wish to track temporal changes, that is, changes to data over time. For example, Zhang may have been a student...
Marie Forleo, a marketing trainer and host of MarieTV, presents the eight tips for genuine networking. Do you agree or disagree with her suggestions? Discuss how this information is useful to you and...
Identify all relevant costs or revenue that are applicable to production- constrained decisions 1. Contributions margin of product 2. Interference with other production 3. Contribution margin per...
Gammaro Compary manufactures wallets from fabric. In 2 0 1 9 , Gammaro made 2 , 1 5 0 , 0 0 0 wallets using 1 , 2 5 0 , 0 0 0 yards of fabric. In 2 0 1 9 , Gammaro has capacity to make 2 , 8 0 0 , 0...

Give an example of a relation schema R and a set of dependencies such that R is

Question:

Step by Step Answer:

The relation schema R A B C D E and ...View the full answer

Database System Concepts

Students also viewed these Computer Sciences questions