Lab03-08. We can erase data elements from a random file because the connected stream in memory is in fact an array. We erase a data item by shifting the rest of the items one position toward the beginning of the stream. However, shifting creates a duplicate data item at the end. In an array, we reduce the size to avoid using that duplicate. In the case of a stream, we must change the last element to a dummy. We know that a file of characters can be accessed randomly because the size of a character is fixed. Assume that you have the following file of characters: ABCDEFGHIJKLMNOPQRSTUVWXYZ

Lab03-08. We can erase data elements from a random file because the connected stream in memory is in fact an array. We erase a data item by shifting the rest of the items one position toward the beginning of the stream. However, shifting creates a duplicate data item at the end. In an array, we reduce the size to avoid using that duplicate. In the case of a stream, we must change the last element to a dummy. We know that a file of characters can be accessed randomly because the size of a character is fixed. Assume that you have the following file of characters: ABCDEFGHIJKLMNOPQRSTUVWXYZ

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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C++ : We can erase data elements from a random file because the connected stream in memory is in fact an array. Weerase a data item by shifting the rest of the items one position toward the beginning of the stream. However, shiftingcreates a duplicate data item at the end. In an array, we reduce the size to avoid using that duplicate. In the case of astream, we must change the last element to a dummy. We know that a file of characters can be accessed randomlybecause the size of a character is fixed. Assume that you have the following file of characters:ABCDEFGHIJKLMNOPQRSTUVWXYZ
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