• "Introduction to Structured Query Language": http://web.archive.org/web/20011116021648/w3.one.net/~jhoffman/sqltut.htm (http://web.archive.org/web/20011116021648/w3.one.net/~jhoffman/sqltut.html)

  • "SQL for Web Nerds," by Philip Greenspun: http://philip.greenspun.com/sql/

  • DBI-related information: http://dbi.perl.org/

  • Programming the Perl DBI, by Alligator Descartes and Tim Bunce (O'Reilly)

  • "DBI Examples and Performance Tuning," by Jeffrey Baker: http://www.saturn5.com/~jwb/dbi-examples.html

  • SQL Fundamentals, by John J Patrick (Prentice Hall)

  • SQL in a Nutshell, by Kevin Kline with Daniel Kline (O'Reilly)