Describe how these statements diffffer, in terms of who receives a balloon and under what
Describe how these statements diffffer, in terms of who receives a balloon and under what
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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Given the following defifinitions:
- S: the domain of all CPSC 121 students.
- G: the domain of all graded CPSC 121 activities.
- A(x, y): student x earns an “A” grade on activity y
- B(x): student x receives a colourful balloon (from the CPSC 121 teaching team).
Now consider the predicate logic statements:
Statement 01:
∀x ∈ S, ∀g ∈ G, A(x, g) ↔ B(x)
Statement 02:
∀x ∈ S,(∀g ∈ G, A(x, g)) ↔B(x)
Statement 03:
∀x ∈ S,(∀g ∈ G,(∀y ∈ S, A(y, g))) ↔ B(x)
Describe how these statements diffffer, in terms of who receives a balloon and under what
conditions.
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