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**en.wikipedia.org**/wiki/**Data_compression**

Thus, one can consider data compression as data differencing with empty source data, the compressed file corresponding to a "difference from nothing." This is the same as considering absolute entropy (corresponding to data compression) as a special case of relative entropy (corresponding to data differencing) with no initial data.

www.ukessays.com/essays/computer-science/**types**-**of-data**...

This report discusses the different types of data compression, the advantages of data compression and the procedures of data compression. 2.0 DATA COMPRESSION. Data compression is important in this age because of the amount of data that is transferred within a certain network. It makes the transfer of data relatively easy [1].

www.headendinfo.com/what-is-**data**-**compression**

Data Compression is a technique used to reduce the size of data by removing number of bits. This technique uses various algorithm to do so. These compression algorithms are implemented according to type of data you want to compress.

codingsight.com/overview-**of-data**-**compression**-in-sql-server

Data compression types. There are two types of data compression available within SQL Server, row-level and page-level. The row-level compression works behind the scenes and converts any fixed length data types into variable length types. The assumption here is that often data is stored at a fixed length type, such as char 100, and they don’t ...

www.techbrothersit.com/2014/11/what-are-**types-of-data-compression**.html

There are two types of Data compression SQL Server supports. 1- Row compression. SQL server engine performs Row Compression by changing the data storage format, it changes fixed length of different data types into variable length format by eliminating the spaces. More detail can be found in below MSDN link.

ecomputernotes.com/.../basic-of-computer-graphics/**data-compression**

There are two general types of compression algorithms: 1. Lossless compression. 2. Lossy compression Lossless Compression. Lossless compression compresses the data in such a way that when data is decompressed it is exactly the same as it was before compression i.e. there is no loss of data.

technicalpathshala.in/what-is-**data**-**compression**

A common data compression technique removes and replaces repetitive data elements and symbols to reduce the data size. Types of Compression. in some case when information is compressed, the redundancies are removed, but sometimes this is not sufficient to reduce the size of data. So in such a way, real information also removed in such a way ...

**simple.wikipedia.org**/wiki/**Data_compression**

Lossy compression. For some types of data, lossy compression can go much further; this is most often the case with media files, like music and images. Lossy compression loses some of the data so that there's less to store. Depending on what information is lost, people do not notice it is missing.

docs.microsoft.com/.../**data-compression**/**data-compression**

To perform archival compression, SQL Server runs the Microsoft XPRESS compression algorithm on the data. Add or remove archival compression by using the following data compression types: Use COLUMNSTORE_ARCHIVE data compression to compress columnstore data with archival compression. Use COLUMNSTORE data compression to decompress archival ...

**www.techopedia.com**/definition/884/**data-compression**

A common data compression technique removes and replaces repetitive data elements and symbols to reduce the data size. Data compression for graphical data can be lossless compression or lossy compression, where the former saves all replaces but save all repetitive data and the latter deletes all repetitive data.

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