Question: Consider the relation schema R={A, B, C, D, E}and the following set of FDs: AB ABCD CEA BDA 1 Find all candidate keys in R

Consider the relation schema R={A, B, C, D, E}and the following set of FDs:

ABCD

CEA

BDA

1 Find all candidate keys in R and count the number of superkeys in R. Justify answer (i.e., include the main steps used for nding all candidate keys and counting the number of superkeys).

2 What is a minimal cover of ? Justify answer (i.e., include the main steps used for nding a minimal cover).

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!

Consider the relation schema R(A, B, C, D, E) and the set of functional dependencies: F-(A E, CE BD, AB D, BE C. CAE). Which of the following is/are candidate key(s) of R? OC (ii) BE (ii) CE ) and...

Consider the relation schema R={A, B, C, D, E} and the following set of FDs: A B AB CD CE A BD A 1. Find all candidate keys in R and count the number of superkeys in R . Justify your answer (i.e.,...

Consider the relation schema R={A, B, C, D, E} and the following set of FDs: A B AB CD CE A BD A 1 Find all candidate keys in R and count the number of superkeys in R. Justify your answer (i.e.,...

Given the set F= {A-B, AB-C, ACBD} of functional dependencies, prove the following dependencies by using the Armstrong axioms. (1) A-ABC (2) AD-BCD 2. Consider a relation schema R(X, Y, Z) with the...

1. (6 pts) Consider the following instance 4 (1) Does the functional dependency D->C hold in this instance? (2) Does the functional dependency C->B hold in this instance? (3) Does the functional...

Hi, This is a relational database question. Struggling with this homework question, when I have more than one determinant attribute on the right hand side. Could you please explain your working with...

Consider the relation schema R={A, B, C, D, E} and the following set of Functional Dependencies (FDs):AB AB CD BC D DE A a. What are the (candidate) keys of R? Justify your answer (i.e., show the...

I need help with this database management hw. 1.(6 pts) Consider the following instance: 4 4 4 4 4 (1) Does the functional dependency C>D hold in this instance? (2) Does the functional dependency...

Consider the relational schema R(A, B, C, D, E, G, H, I, J) and a set of functional dependencies F = {AI BC, CGI, EIBG, I AHJ, B I, JHI). Note that A, B, C, D, E, G, H, I, J are attributes. 1. Find...

Consider the following set F of functional dependencies on the relation schema R ( A , B , C , D , E , F ) : A - > D AB - > DE BD - > A AC - > F ( a ) List two candidate keys for R . ( 6 points ) ( b...

A charge of 3.5 ( 10-11 C is to be stored on each plate of a parallel-plate capacitor having an area of 160 mm2 (0.25 in.2) and a plate separation of 3.5 mm (0.14 in.). (a) What voltage is required...

Let f(x) be a pdf and let a be a number such that, for all > 0, f(a + ) = f(a - ). Such a pdf is said to be symmetric about the point a. (a) Give three examples of symmetric pdfs. (b) Show that if X...

Needing a hand with the LIFO section. 1 . Based on the information given above, calculate cost of goods sold and ending inventory using the FIFO method. 2 . Calculate cost of goods sold and ending...

CT Corp Comprehensive Question Canadian Tire Corporation, Limited (Canadian Tire) is a family of companies that includes a retail segment and a financial services division, among others. The retail...

2. What is an information system? How does it work? What are its management, organization, and technology components and why are complementary assets essential for ensuring that information systems...

1. How are information systems transforming business, and why are they so essential for running and managing a business today?

7. Explain how culture can function as resistance to dominant value systems.