- Storing data in a format that requires less space than usual.
- Data Compression is particularly useful in communications because it enables devices to transmit or store the same amount of data in fewer bits.
- There are variety of data compression techniques, but only a few have been standardized.
- The CCITT(Consulative committee for International Telephony and Telegraphy) has defined a standard data compression technique for transmitting faxes.
- A compression standard for data communications through modems.
- In Addition there are file compression formats, such as ARC and ZIP.
- Data Compression is also widely used in backup utilities, spreedsheet applications and database management systems.
- Certain types of data, such as bit-mapped graphics, can be compressed to a small fraction of their normal size.
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