Computer Science: An Overview (13th Edition) (What's New in Computer Science)
13th Edition
ISBN: 9780134875460
Author: Glenn Brookshear, Dennis Brylow
Publisher: PEARSON
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Chapter 9.5, Problem 1QE
Program Plan Intro
Merge
A family of algorithm that takes multiple sorted lists as input and a single list as output that contains all the input lists in sorted order is known as merge algorithm.
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Consider a file of 16384 records. Each record is 32 bytes long and its key field is of size 6 bytes. The file is ordered on a non-key field, and the file organization is unspanned. The file is stored in a file system with block size 1024 bytes, and the size of a block pointer is 10 bytes. If the secondary index is built on the key field of the file, and a multilevel index scheme is used to store the secondary index, the number of first-level and second-level blocks in the multilevel index are respectively
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Chapter 9 Solutions
Computer Science: An Overview (13th Edition) (What's New in Computer Science)
Ch. 9.1 - Identify two departments in a manufacturing plant...Ch. 9.1 - Prob. 2QECh. 9.1 - Summarize the roles of the application software...Ch. 9.2 - Prob. 1QECh. 9.2 - Prob. 2QECh. 9.2 - Prob. 4QECh. 9.2 - Prob. 5QECh. 9.2 - Prob. 6QECh. 9.3 - Prob. 1QECh. 9.3 - What is a persistent object?
Ch. 9.3 - Identify some classes as well as some of their...Ch. 9.3 - Prob. 4QECh. 9.4 - Prob. 1QECh. 9.4 - Prob. 2QECh. 9.4 - Prob. 3QECh. 9.4 - Prob. 4QECh. 9.4 - Prob. 5QECh. 9.4 - Prob. 6QECh. 9.5 - Prob. 1QECh. 9.5 - Prob. 2QECh. 9.5 - Prob. 3QECh. 9.5 - Prob. 4QECh. 9.5 - Prob. 5QECh. 9.5 - Prob. 6QECh. 9.5 - Prob. 7QECh. 9.6 - Prob. 1QECh. 9.6 - Give an additional example of a pattern that might...Ch. 9.6 - Prob. 3QECh. 9.6 - How does data mining differ from traditional...Ch. 9.7 - Prob. 1QECh. 9.7 - Prob. 2QECh. 9.7 - Prob. 3QECh. 9.7 - Prob. 4QECh. 9 - Prob. 1CRPCh. 9 - Prob. 2CRPCh. 9 - Prob. 3CRPCh. 9 - Prob. 4CRPCh. 9 - Prob. 5CRPCh. 9 - Prob. 6CRPCh. 9 - Prob. 7CRPCh. 9 - Prob. 8CRPCh. 9 - Prob. 9CRPCh. 9 - Prob. 10CRPCh. 9 - Prob. 11CRPCh. 9 - Prob. 12CRPCh. 9 - Using the commands SELECT, PROJECT, and JOIN,...Ch. 9 - Answer Problem 13 using SQL. PROBLEM 13 13. Using...Ch. 9 - Prob. 15CRPCh. 9 - Prob. 16CRPCh. 9 - Prob. 17CRPCh. 9 - Prob. 18CRPCh. 9 - Prob. 19CRPCh. 9 - Empl Id Name Address SSN Job Id Job Title Skill...Ch. 9 - Empl Id Name Address SSN Job Id Job Title Skill...Ch. 9 - Prob. 22CRPCh. 9 - Prob. 23CRPCh. 9 - Prob. 24CRPCh. 9 - Prob. 25CRPCh. 9 - Write a sequence of instructions (using the...Ch. 9 - Prob. 27CRPCh. 9 - Prob. 28CRPCh. 9 - Prob. 29CRPCh. 9 - Prob. 30CRPCh. 9 - Prob. 31CRPCh. 9 - Prob. 32CRPCh. 9 - Prob. 33CRPCh. 9 - Prob. 34CRPCh. 9 - Prob. 35CRPCh. 9 - Prob. 36CRPCh. 9 - Prob. 37CRPCh. 9 - Prob. 38CRPCh. 9 - Prob. 39CRPCh. 9 - Prob. 40CRPCh. 9 - Prob. 41CRPCh. 9 - Prob. 42CRPCh. 9 - Prob. 43CRPCh. 9 - Prob. 44CRPCh. 9 - Prob. 45CRPCh. 9 - Prob. 46CRPCh. 9 - Prob. 47CRPCh. 9 - Prob. 48CRPCh. 9 - Prob. 49CRPCh. 9 - Prob. 50CRPCh. 9 - Prob. 51CRPCh. 9 - Prob. 52CRPCh. 9 - Prob. 53CRPCh. 9 - Prob. 54CRPCh. 9 - Prob. 55CRPCh. 9 - Prob. 56CRPCh. 9 - Prob. 57CRPCh. 9 - Prob. 58CRPCh. 9 - Prob. 59CRPCh. 9 - Prob. 60CRPCh. 9 - Prob. 61CRPCh. 9 - Prob. 62CRPCh. 9 - Prob. 1SICh. 9 - Prob. 2SICh. 9 - Prob. 3SICh. 9 - Prob. 4SICh. 9 - Prob. 5SICh. 9 - Prob. 6SICh. 9 - Prob. 7SICh. 9 - Prob. 8SICh. 9 - Prob. 9SICh. 9 - Prob. 10SI
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- Compute total no of blocks} Consider a file of 8192 records. Each record is 16 bytes long and its key field Is of size 6 bytes. The file is ordered on a key field, and the file organization is unspanned. The file is stored in a file system with block size 512 bytes, and the size of a block pointer is 10 bytes. If the primary index is built on the key field of the file, and a multilevel index scheme is used to store the primary index, number of first-level and second level blocks in the multilovel index are the respectively 16 and 1 b. 32 and 1 16 and 2 8 and 1 c. d.arrow_forwardConsider a file with a secondary dense index structure on a non-ordering key field where 120,000 records stored on a disk with block size of 2048 bytes. Length of every record is of fixed and un-spanned Record size is 150 bytes.arrow_forwardConsider the deletion of record 5 from the file of Figure 13.3. Compare therelative merits of the following techniques for implementing the deletion: Mark record 5 as deleted, and move no records.arrow_forward
- A file has a dense secondary index with blocking factor equal to 64 index entries per block. If the total number of blocks for the first index level is 1024 blocks, answer the following questions: What is the total number of blocks needed for the second and third level indexes? How many blocks need to be accessed to access a record in this three level index?arrow_forward3. Given an unsorted file of size 105 records. Compute the number of phases to decide whether we should use PFD of order 3 or order 4arrow_forwardA primary index is created on a a) non-key, non-ordering attribute of a file b) non-key, ordering attribute of a file c) key, non-ordering attribute of a file d) key, ordering attribute of a filearrow_forward
- Design a direct file organization using a hash function, to store an item file withitem number as its primary key. The primary keys of a sample set of records ofthe item file are listed below. Assume that the buckets can hold two records eachand the blocks in the primary storage area can accommodate a maximum of fourrecords each. Make use of the hash function h(k) = k mod 8, where k represents thenumerical value of the primary key (item number).369 760 692 871 659 975 981 115 620 208 821 111 554 781 181 965arrow_forwardAssume a database has N = 14,000,000 pages, and the manager is trying to use external merge sort algorithm to sort it. The DBMS did not apply double buffer or blocked I/O, it use quicksort for in- memory sorting If the DBMS has 8 buffers. Q1. Based on Lecture 8 (sorting), in order to sort the file, how many passes do we need? A.8 B.9 C.10 D.11 Q2. based on Lecture 8 (sorting), in order to sort the file, What is the total I/O cost? A. 224,000,000 B. 252,000,000 C. 280,000,000 D. 308,000,000 A.7 B.8 C.9 D.10 Q3. What is the smallest number of buffers that the DBMS can sort the target file using 8 passes?arrow_forwardIs it possible with a sequential file organization to permitsequential scanning of the data, based on several sortedorders? If not, why not? If it is possible, how?arrow_forward
- Can clustering of files occur after the files are populated with records?arrow_forwardSuppose a file with 65536 records is organized using multi-level indexing as the file is ordered on a non-key field. Each record is 48 bytes long and the size of its key field is 4 bytes. The indexing is built on the key field of the file. The size of the disk block is 2 KB, and the block pointer size is 12 bytes. The file organization is unspanned. How many blocks will be required for the inner and outer index respectively in a multi-level index? 512 and 2 b) 512 and 4 e) 1024 and 4 d) 1024 and 8arrow_forwardConsider the deletion of record 5 from the file of Figure 13.3. Compare therelative merits of the following techniques for implementing the deletion:a. Move record 6 to the space occupied by record 5, and move record 7 tothe space occupied by record 6.b. Move record 7 to the space occupied by record 5.c. Mark record 5 as deleted, and move no records.arrow_forward
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