This two volume set LNCS 7238 and LNCS 7239 constitutes the refereed proceedings of the 17th International Conference on Database Systems for Advanced Applications, DASFAA 2012, held in Busan, South Korea, in April 2012.
The 44 revised full papers and 8 short papers presented together with 2 invited keynote papers, 8 industrial papers, 8 demo presentations, 4 tutorials and 1 panel paper were carefully reviewed and selected from a total of 159 submissions. The topics covered are query processing and optimization, data semantics, XML and semi-structured data, data mining and knowledge discovery, privacy and anonymity, data management in the Web, graphs and data mining applications, temporal and spatial data, top-k and skyline query processing, information retrieval and recommendation, indexing and search systems, cloud computing and scalability, memory-based query processing, semantic and decision support systems, social data, data mining.

This book constitutes the refereed proceedings of the Second International Workshop on Data Engineering Issues in E-Commerce and Services, DEECS 2006 held in San Francisco, California, June 2006.

The book presents 15 revised full papers and 8 revised short papers organized in topical sections on e-commerce services, business processes and services, data and knowledge engineering, business models and analysis, Web services, and e-commerce systems.