Choose all of the correct answers for each of the following:Consider the relationship R between two entity sets E, and E₂. Let K, and K₂ bethe sets of key attributes of E, and E₂, respectively:E₁(K, other attributes of E₁);Ex(K, other attributes of E₂).Further, assume that R has no attributes[a] If R is one-one between E₁ and E₂, then the key[s] for the relation R:[b]1-(K₂)2-(K₂)3- (K₁, K₂)4- All of the above5- None of the aboveIf R is one-many from E, to E₂, Then the key[s] for the relation R:1- (K₂)2-(K₂)3-(K₁, K₂)4- All of the above5- None of the above[c] If R is many-many between E₁ and E₂, then the key[s] for the relation R:1- (K₁)2- (K₂)3- (K₁, K₂)4- All of the above5- None of the above[d] If R is many-many between E, and E₂ and has an attribute A, Then thekey[s] for the relation R:1-(K₁)2- (K₂)3-(K₁, K₂)4- All of the above5- None of the above

A] For one to one relationship both Entity E1 and E2 have direct relation. You can make any table…

Answered: Choose all of the correct answers for…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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This question refers to unions and intersections of relations. Since relations are subsets of Cartesian products, their unions and intersections can be calculated as for any subsets. Given two relations R and S from a set A to a set B, RUS= {(x, y) E A × B| (x, y) ERor (x, y) E S} RO S= {(x, y) E A x B | (x, y) ERand (x, y) E S}. Let A = {-4, 4, 7, 9} and B = {4, 7}, and define relations R and S from A to B as follows. For every (x, y) E Ax B, x R y x| = [y] and x Sy x - y is even. Which ordered pairs are in A x B, R, S, R U S, and RN S? (Use set-roster notation to enter your answers.) Ax B = R = S = RUS = ROS =
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