According to my student, the abstract design of the three basic page replacement algorithms (first-in, first-out (FIFO), and last-in, last-out (LRU), and optimum) is similar, with the only difference being the characteristic that is utilized to determine the page to be replaced. Personally, I thought the exact opposite. (a) When you

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
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According to my student, the abstract design of the three basic page replacement algorithms (first-in, first-out (FIFO), and last-in, last-out (LRU), and optimum) is similar, with the only difference being the characteristic that is utilized to determine the page to be replaced. Personally, I thought the exact opposite.
(a) When you say that the FIFO algorithm has this quality, what exactly do you mean? What is the name of the algorithm you're referring to in (b)? Just what is the LRU algorithm, and how does it function? In its simplest form, what is the pptimal algorithm?
It is recommended that the specification contain the general method for these page replacement schemes (b).

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