Philip Bohannon Srujana Merugu Cong Yu Vipul Agarwal Pedro DeRose Arun Iyer Ankur Jain Vinay Kakade Mridul Muralidharan Raghu Ramakrishnan Warren Shen Purple SOX extraction management system. 21-27 2008 37 SIGMOD Record 4 http://doi.acm.org/10.1145/1519103.1519107 db/journals/sigmod/sigmod37.html#BohannonMYADIJKMRS08