Refers to data compression
techniques in which no data
is lost. The PKZIP
compression technology is an example of lossless compression. For most types of data, lossless compression techniques can reduce the space needed by only about 50%. For greater compression, one must use a lossy compression
technique. Note, however, that only certain types of data — graphics, audio, and video — can tolerate lossy compression. You must use a lossless compression technique when compressing data and programs.