Database Systems for Advanced Applications (DASFAA) is an international - rum for academic exchanges and technical discussions among researchers,dev- opers, and users of databases from academia, business, and industry. DASFAA has been a leading conference in the areas of databases, large-scale data m- agement, data mining, and the Web. Workshops of the 15th DASFAA were held in Tsukuba, Japan on April 4, 2010. These proceedings contain papers of DASFAA2010 workshops. Among the proposals submitted in response to the call-for-workshops, we decided to hold the following six workshops: - First International Workshop on Graph Data Management: Techniques and Applications (GDM 2010) - Second International Workshop on Benchmarking of Database Management Systems and Data-Oriented Web Technologies (BenchmarX 2010) - Third International Workshop on Managing Data Quality in Collaborative Information Systems (MCIS 2010) - Workshop on Social Networks and Social Media Mining on the Web (SNSMW 2010) - Data-Intensive eScience Workshop (DIEW 2010) - Second International Workshop on Ubiquitous Data Management (UDM 2010) TheresearchareaofDASFAAisgrowingrapidly. Thetopicsofeachworkshop cover speci?c area of DASFAA and complement topics of the main conference.Wearegratefultotheworkshoporganizersfortheire?ortinsolicitingpapers, selecting papers by peer review, and preparing attractive programs. We would like to express our appreciation to Qiang Ma, Lifeng Sun and Takayuki Yumoto for their dedicated work. Our thanks also goes to Chiemi Watanabe for her hard work in preparing this proceedings volume.

Database Systems for Advanced Applications (DASFAA) is an international - rum for academic exchanges and technical discussions among researchers,dev- opers, and users of databases from academia, business, and industry. DASFAA has been a leading conference in the areas of databases, large-scale data m- agement, data mining, and the Web. Workshops of the 15th DASFAA were held in Tsukuba, Japan on April 4, 2010. These proceedings contain papers of DASFAA2010 workshops. Among the proposals submitted in response to the call-for-workshops, we decided to hold the following six workshops: - First International Workshop on Graph Data Management: Techniques and Applications (GDM 2010) - Second International Workshop on Benchmarking of Database Management Systems and Data-Oriented Web Technologies (BenchmarX 2010) - Third International Workshop on Managing Data Quality in Collaborative Information Systems (MCIS 2010) - Workshop on Social Networks and Social Media Mining on the Web (SNSMW 2010) - Data-Intensive eScience Workshop (DIEW 2010) - Second International Workshop on Ubiquitous Data Management (UDM 2010) TheresearchareaofDASFAAisgrowingrapidly. Thetopicsofeachworkshop cover speci?c area of DASFAA and complement topics of the main conference.Wearegratefultotheworkshoporganizersfortheire?ortinsolicitingpapers, selecting papers by peer review, and preparing attractive programs. We would like to express our appreciation to Qiang Ma, Lifeng Sun and Takayuki Yumoto for their dedicated work. Our thanks also goes to Chiemi Watanabe for her hard work in preparing this proceedings volume.