Which of the following statements regarding sentinel loop is NOT correct? Sentinel has to be able to stand out from the data in order for this to work. O The user does not need to enter a decision each time to determine whether or not to continue with the process. Sentinel is always an empty string in this case. O It is not necessary for it to have any prior knowledge regarding the number of times it will carry out the operation.

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
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Which of the following statements regarding sentinel loop is NOT correct? Sentinel has to be able to stand out from the data in order for this to work. O The user does not need to enter a decision each time to determine whether or not to continue with the process. Sentinel is always an empty string in this case. O It is not necessary for it to have any prior knowledge regarding the number of times it will carry out the operation.

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