File Compression

Definition(s)

  • A technology for storing data in fewer bits, it makes data smaller so less disk space is needed to represent the same information. Compression programs like WinZip and UNIX compress are valuable to network users because they save both time and bandwidth. Data compression is also widely used in backup utilities, spreadsheet applications, and database management systems.  1  2
  • A technology for storing data in fewer bits, it makes data smaller so less disk space is needed to represent the same information. Data compression is widely used to backup utilities, spreadsheet applications, and database management systems. Compressed files must be decompressed in order to be useable.  3
  • A technology that reduces the size of a file.  4
  • Any method which reduces the amount of data necessary to transmit information from one point to another. Compression generally eliminates redundant information and/or predicts where changes will occur. “Lossless” compression techniques totally preserve the integrity of the input. “Lossy” methods disregard some of the originals. The ratio of the file sizes of a compressed file to an uncompressed file, e.g., with a 20:1 compression ratio, an uncompressed file of 1MB is compressed to 50KB.  5
  • A technology that reduces the size of a file. Compression programs are valuable to network users because they help save both time and bandwidth.  6

Notes

  1. Fios, E-Discovery Glossaryhttp://discoveryresources.org/01_electronic_discovery_glossary.html 
  2. RSI, Glossary.
  3. Vinson & Elkins LLP Practice Support, EDD Glossary.
  4. Legal Electronic Document Institute, Basic Principles of Automated Litigation Support (2005).
  5. Formerly American Document Management, Glossary of Terms, now 5i Solutions Glossary.
  6. Kroll Ontrack, Glossary of Termshttp://www.krollontrack.com/glossaryterms