20.4 References

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

• "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)