Hugh E. Williams is the Associate Professor in Information Retrieval in the School of Computer Science and IT at RMIT University in Melbourne, Australia. He teaches in all areas of computer science, and began teaching databases in 1995 and PHP programming in 2000. His research interests include building better web search engines, multimedia and genomic information retrieval, and designing fast data structures. When not at work Hugh likes to go running, watch Richmond play footy, follow the cricket, and write books. Hugh has a PhD from RMIT University. Saied Tahaghoghi is a supervisor for Information Technology programs at the School of Computer Science & Information Technology at RMIT University in Melbourne, Australia. He speaks frequently at the Melborne MySQL User Group and at open source conferences in Asia.