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Given the following characteristics of magnetic tape, and using linear recording: - Density=2000 bpi - Speed= 1500 inches/second - Size=3000 feet - Number of records to be stored: 200,000 records - Size of each records=100 bytes - Block size=10 records

Given the following characteristics of magnetic tape, and using linear recording: - Density=2000 bpi - Speed= 1500 inches/second - Size=3000 feet - Number of records to be stored: 200,000 records - Size of each records=100 bytes - Block size=10 records

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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Given the following characteristics of magnetic tape, and using linear recording: - Density=2000 bpi - Speed= 1500 inches/second Size=3000 feet Number of records to be stored: 200,000 records - Size of each records=100 bytes - Block size=10 records - IBG=.5 inches Calculate the following: 1- Number of blocks needed 2- Size of the block in bytes 3- Time required to read one block 4- Time required to read all blocks 5- Amount of tape used for data only in inches 6- Total amount of tape used (data + IBG) in inches
Transcribed Image Text:Given the following characteristics of magnetic tape, and using linear recording: - Density=2000 bpi - Speed= 1500 inches/second Size=3000 feet Number of records to be stored: 200,000 records - Size of each records=100 bytes - Block size=10 records - IBG=.5 inches Calculate the following: 1- Number of blocks needed 2- Size of the block in bytes 3- Time required to read one block 4- Time required to read all blocks 5- Amount of tape used for data only in inches 6- Total amount of tape used (data + IBG) in inches
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