Consider f : X →Y, with domain X = {c,j, v,m, e, s, n, q, u, d, i, g} and codomain Y = {80,08, 57, 97, 82, 74, 39, 84, 01, 35, 15, 94}, as defined below using the set of expressions of the form f(a) = b. It is currently a bijection. Which of the following sequences of operations would cause this function to lose its surjectivity while still remaining a valid injection? f(e) f(g) = 94 f(j) = 08 f(s) = 74 = 57 = 82 f(v) f(m) = 97 = 80 f(c) f(u) = 01 f(d) = 35 f(n) = 39 f(q) = 84 = 15 f(i) Select one: O add 10 to the codomain - remove 80 from the codomain → change the preimage of 94 to d O add k to the domain change the preimage of 84 tom → remove 35 from the codomain O remove 74 from the codomain → remove g from the domain → change the preimage of 15 to d O change the preimage of 01 tod → change the image of j to 82 → change the preimage of 08 to j none of these options O add 37 to the codomain - change the image of d to 37 → removen from the domain O remove d from the domain → change the preimage of 74 to g → add 24 to the codomain
Consider f : X →Y, with domain X = {c,j, v,m, e, s, n, q, u, d, i, g} and codomain Y = {80,08, 57, 97, 82, 74, 39, 84, 01, 35, 15, 94}, as defined below using the set of expressions of the form f(a) = b. It is currently a bijection. Which of the following sequences of operations would cause this function to lose its surjectivity while still remaining a valid injection? f(e) f(g) = 94 f(j) = 08 f(s) = 74 = 57 = 82 f(v) f(m) = 97 = 80 f(c) f(u) = 01 f(d) = 35 f(n) = 39 f(q) = 84 = 15 f(i) Select one: O add 10 to the codomain - remove 80 from the codomain → change the preimage of 94 to d O add k to the domain change the preimage of 84 tom → remove 35 from the codomain O remove 74 from the codomain → remove g from the domain → change the preimage of 15 to d O change the preimage of 01 tod → change the image of j to 82 → change the preimage of 08 to j none of these options O add 37 to the codomain - change the image of d to 37 → removen from the domain O remove d from the domain → change the preimage of 74 to g → add 24 to the codomain
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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