COMPUTER SCIENCE ILLUMIN.-TEXT
6th Edition
ISBN: 2810016866372
Author: Dale
Publisher: JONES+BART
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Chapter 10, Problem 55E
Program Plan Intro
Given data:
It is given that the partitions are fixed and there is a new job which requires 52 blocks of main memory. Refer the given diagram in the textbook. From that, it is need to show the memory after using each of the following partition selection approaches.
Fixed-partition technique:
- In this technique, main memory is sub-divided into a number of partitions and each job is loaded into the partition which is big enough to hold it.
- There is no need for the size of the partitions to be same.
- The following three approaches are used to allocates a new
program in the main memory in fixed partition technique,- First fit
- Best fit
- Worst fit
Explanation of Solution
b. Best fit
- The best fit is the technique in which the program is allocated to the smallest partition which is big enough to hold it.
- When a new program arrives, the smallest partition in the main memory is “empty 52 blocks” which is big enough to hold “52 blocks”, and the new process is allocated in that partition...
Explanation of Solution
c. Worst fit
- The worst fit is the technique in which the program is allocated to the largest partition which is big enough to hold it.
- When a new program arrives, the largest partition in the main memory is “empty 100 blocks” which is big enough to hold “52 blocks”, and the new process is allocated in that partition...
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Given the dependency diagram of attributes C1,C2,C3,C4,C5 in a table shown in the following figure, the primary key attributes are underlined
Make a database with multiple tables from attributes as shown above that are in 3NF, showing PK, non-key attributes, and FK for each table? Assume the tables are already in 1NF. Hint: 3 tables will result after deducing 1NF -> 2NF -> 3NF
Chapter 10 Solutions
COMPUTER SCIENCE ILLUMIN.-TEXT
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