This book constitutes the thoroughly refereed proceedings

of the Fourth International Conference on Data Technologies and Applications,

DATA 2015, held in Colmar, France, in July 2015.The 9 revised full papers were carefully reviewed and

selected from 70 submissions. The papers deal with the following topics:



databases, data warehousing, data mining, data management, data security,

knowledge and information systems and technologies; advanced application of

data.