The tremendous advances in wireless communication and mobile computing technologies have created a new computing and communication environment that provides services anytime and anywhere for everyone. Such an environment enables users to access a wide range of services and applications using a large variety of mobile and ubiquitous devices (e.g., cell phones, handheld computers, and so on). In order to accelerate this trend in the future, further progresses of the researches on wireless and pervasive computing, especially on data management, are necessary. Following the success of DMWPCs (2008 in Okinawa, Japan / 2009 in Bradford, UK / 2010 in Perth, Australia / 2011 in Biopolis, Singapore / 2012 in Fukuoka, Japan / 2013 in Barcelona, Spain), DMWPC 2014 aims to bring together practitioners and researchers from both academia and industry in order to have a forum for discussion and technical presentations on the current researches and future research directions related to this hot research area.