Question: Consider a key K that uniquely identifies any row in a table. Now consider the set of tuples {K1, K2... Kn), such that each K;

Consider a key K that uniquely identifies any row in a table. Now consider the set of tuples {K1, K2... Kn), such that each K; is formed by taking away one attributed from K. If none of the tuples K; for i = 1..n is a key, then K must be a candidate key. True False

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!

Submitted to Management Science manuscript MS-0001-1922.65 Authors are encouraged to submit new papers to INFORMS journals by means of a style file template, which includes the journal title....

A creative engineer suggests structuring the TLB so that not all the bits of the presented address need match to result in a hit. Suggest how this might be achieved, and what might be the costs and...

Let A, B be sets. Define: (a) the Cartesian product (A B) (b) the set of relations R between A and B (c) the identity relation A on the set A [3 marks] Suppose S, T are relations between A and B, and...

MATHEMATICS FOR MACHINE LEARNING Marc Peter Deisenroth A. Aldo Faisal Cheng Soon Ong Contents Foreword 1 Part I Mathematical Foundations 9 1 Introduction and Motivation 11 1.1 Finding Words for...

Let r and s be solutions to the quadratic equation x 2 b x + c = 0. For n N, define d0 = 0 d1 = r s dn = b dn1 c dn2 (n 2) Prove that dn = r n s n for all n N. [4 marks] (b) Recall that a commutative...

I have literally posted the complete assignment information, can I please have some help with these two problems? MAT 375 Module Two Guided Activity: (Continuous) Dynamical Systems Our textbook has a...

Consider a block cipher that works with blocks of length b=4 and segments of length s=3. Consider the key K that transforms a bit vector of length 4 by shifting it by one bit to the left, i.e., K...

Complete the pseudocode for the algorul IINDNOD Algorithm 3) hy marching anchising statements number listed ca the left hand side below, with a corresponding operation, listed on the right-hand side...

Hi everyone I need help with python and an intro to crypto class, I wish I never took this class because its so hard and I am not even a computer science major. Anything will be greatly appreciated ....

Feistel ciphers: (a) Consider the above Feistel cipher with r = 2 rounds. Describe an exhaustive key search attack. Is this Feistel cipher secure against the exhaustive key search attack? Explain....

A state government is considering construction of a flood control dike having a life span of 15 years. History indicates that a flood occurs every five years and causes $600,000 in damages, on...

If a projectile is fired with an initial velocity v at an angle of inclination 0 from the horizontal, then its trajectory, neglecting air resistance, is the parabola y (tan 0) r 2, 0

in Alberta real estate transaction Saraya Jones recently purchased a home in downtown Toronto. She is a Canadian resident. What taxes will Saraya be required to pay on closing?

Options for answer below are either a, b, c, d, or e Middle picture is question. Top and bottom are enhanced images of the graph Compound 2: mass spectrometer diagram (200/202) 2) Read these two mass...

Why do HCMSs exist? Do they change over time?

Suppose the price of oil falls sharply (as it did in 1986 and again in 1998). a. Show the impact of such a change in both the aggregate-demand/aggregate-supply diagram and in the Phillips-curve...

When did the shift from Text-based Business Application Software to GUI-based Applications begin?