Write a function contact_event (visit_a, visit_b) to determine if two visits overlap in time and space, allowing for contact between two people to potentially occur. The parameters of this function are as follows: • visit_a • visit_b each of which is a 7-tuple formatted as described above. The function should return True if a contact could have occurred between two distinct people, and False otherwise. If one visit began at the exact time that the other visit ended, you may assume that a potential contact could not occur (ie, the function should return False). If either of the visits is not valid, the function should return None. Assumptions: You can assume that the input arguments are syntactically correct given the definitions and assumptions on the previous slides. Here are some example calls to the function:

Write a function contact_event (visit_a, visit_b) to determine if two visits overlap in time and space, allowing for contact between two people to potentially occur. The parameters of this function are as follows: • visit_a • visit_b each of which is a 7-tuple formatted as described above. The function should return True if a contact could have occurred between two distinct people, and False otherwise. If one visit began at the exact time that the other visit ended, you may assume that a potential contact could not occur (ie, the function should return False). If either of the visits is not valid, the function should return None. Assumptions: You can assume that the input arguments are syntactically correct given the definitions and assumptions on the previous slides. Here are some example calls to the function:

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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