what is the difference between data compression and compaction?
As nouns the difference between compression and impaction is that compression is an increase in density; the act of compressing, or the state of being compressed; compaction while impaction is compression; the packing together of loose matter.
Data compaction. In telecommunication, data compaction is the reduction of the number of data elements, bandwidth, cost, and time for the generation, transmission, and storage of data without loss of information by eliminating unnecessary redundancy, removing irrelevancy, or using special coding.