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deletion anomaly

deletion anomaly

Database System Concepts
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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Which of the following will cause a deletion anomaly in the following table?

  1. Deleting the ride of client C1 with JobID 1.
  2. Deleting the ride of client C1 with JobID 3.
  3. Deleting the ride of client C2 with JobID 4.

A) only 3

B) 1 and 3

C) 1 and 2

D) 2 and 3

JobID JobDate Time driverlD driver Name taxilD clientID clientName jobPickUpAddress 1 25/07/14 10.00 Di Joe Bull T1 C1 Anne Woo 1 Storrie Rd, Paisley 29/07/14 10.00 Di Joe Bull T1 C1 Anne Woo 1 Storrie Rd, Paisley 30/07/14 11.00 D2 Tom Win T2 C1 Anne Woo 3 High Street, Paisley 4 2/08/14 13.00 D3 Jim Jones T3 C2 Mark Tin 1A Lady Lane, Paisley 2/08/14 13.00 D4 Steven Win T1 C3 John Seal 22 Red Road, Paisley 6. 25/08/14 10.00 D2 Tom Win T2 С4 Karen Bow 17 High Street, Paisley
Transcribed Image Text:JobID JobDate Time driverlD driver Name taxilD clientID clientName jobPickUpAddress 1 25/07/14 10.00 Di Joe Bull T1 C1 Anne Woo 1 Storrie Rd, Paisley 29/07/14 10.00 Di Joe Bull T1 C1 Anne Woo 1 Storrie Rd, Paisley 30/07/14 11.00 D2 Tom Win T2 C1 Anne Woo 3 High Street, Paisley 4 2/08/14 13.00 D3 Jim Jones T3 C2 Mark Tin 1A Lady Lane, Paisley 2/08/14 13.00 D4 Steven Win T1 C3 John Seal 22 Red Road, Paisley 6. 25/08/14 10.00 D2 Tom Win T2 С4 Karen Bow 17 High Street, Paisley
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