The case for a wide-table approach to manage sparse relational data sets.

Eric Chu Jennifer L. Beckmann Jeffrey F. Naughton The case for a wide-table approach to manage sparse relational data sets. 821-832 2007 conf/sigmod/2007 SIGMOD Conference http://doi.acm.org/10.1145/1247480.1247571 db/conf/sigmod/sigmod2007.html#ChuBN07