Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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What it means by data compression? List several data compression algorithms

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Data compression:

  • Data compression techniques are used in order to save memory space of computer for further storage purpose.
  • Two types of data compression; lossy compression, and lossless compression.
  • Lossless compression is one of the data compression technique and is very useful in the case of alteration of original data is unfavorable.
  • Lossy compression is also used to reduce the size of data for storing and transmitting the data. The data loss will occur at lossy compression technique.
  • This technique is used in compressing audio and video files where the loss of information may not be detected by the users. Encoding techniques are used to perform data compression, so the data will be more secure while it is transferred over internet.
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