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Suppose that a disk unit has the following parameter: block size B = 1200 bytes Consider a STUDENT file with the following fields: NUMBER, 10 bytes; • LASTNAME, 20 bytes; FIRSTNAME, 20 bytes; BIRTHDATE, 10 bytes; The STUDENT file has r=10000 STUDENT records, fixed-length format, and unspanned blocking. Calculate the following values for the STUDENT file: (a) Calculate the record size R (b) Calculate the blocking factor bfr (c) Calculate the number of disk blocks b

Suppose that a disk unit has the following parameter: block size B = 1200 bytes Consider a STUDENT file with the following fields: NUMBER, 10 bytes; • LASTNAME, 20 bytes; FIRSTNAME, 20 bytes; BIRTHDATE, 10 bytes; The STUDENT file has r=10000 STUDENT records, fixed-length format, and unspanned blocking. Calculate the following values for the STUDENT file: (a) Calculate the record size R (b) Calculate the blocking factor bfr (c) Calculate the number of disk blocks b

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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Suppose that a disk unit has the following parameter:

  • block size B = 1200 bytes

Consider a STUDENT file with the following fields:

  • NUMBER, 10 bytes; • LASTNAME, 20 bytes;
  • FIRSTNAME, 20 bytes;
  • BIRTHDATE, 10 bytes;

The STUDENT file has r=10000 STUDENT records, fixed-length format, and unspanned blocking. Calculate the following values for the STUDENT file:

(a) Calculate the record size R

(b) Calculate the blocking factor bfr

(c) Calculate the number of disk blocks b

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