This the 24th issue of Transactions on Large-Scale Data- and Knowledge-Centered Systems
contains extended and revised versions of seven papers presented at the 25th International
Conference on Database and Expert Systems Applications DEXA 2014 held in Munich Germany in
September 2014. Following the conference and two further rounds of reviewing and selection
six extended papers and one invited keynote paper were chosen for inclusion in this special
issue. Topics covered include systems modeling similarity search bioinformatics data pricing
k-nearest neighbor querying database replication and data anonymization.