Structural Join Oriented XML Data Compression

Aiming at the problem of failing to support effective structural join on compressed data of existing XML Data compressors, this paper proposes a new Compressor Structural Join Oriented XML Data Compressor which makes structural join possible by giving all elements and attribute names in document a unique region encoding. This paper also provides a definition of the Same Sub Tree(SST) and an algorithm of merging the SSTs. An experimental evaluation on the typical XML datasets shows the efficiency of SJXC.