In many systems, it is desirable to use some form of compression technique in order to handle data. This can be necessary in order to improve upon data requirements for storage, or to facilitate quicker data transfer in case of limited bandwidth. There...

In computer science and information theory, data compression or source coding is the process of encoding information using fewer bits (or other information-bearing units) than an unencoded representation would use through use of specific encoding...

There are several myths associated with data compression, one being compression is the same as compaction, but compaction operates on the externals of data records, reducing interrecord gaps. Compression actually rewrites the contents, or internals of the data records. There are several compression techniques,...

DB2 3.0 uses the Lempel-Ziv algorithm for data compression, as well as S/390 ESA compression techniques. The previous release took a different approach to compression, using a variation of the Huffman algorithm. Although compression reduces backup and provides DASD savings, it can result in...